diff --git a/mindspore/lite/nnacl/fp32/prelu_fp32.c b/mindspore/lite/nnacl/fp32/prelu_fp32.c
index 65b1b1fd6c..c75ad0235c 100644
--- a/mindspore/lite/nnacl/fp32/prelu_fp32.c
+++ b/mindspore/lite/nnacl/fp32/prelu_fp32.c
@@ -15,104 +15,130 @@
  */
 #include "nnacl/fp32/prelu_fp32.h"
 
-void PRelu(float *input, float *output, const PReluParameter *prelu_param_, int plane) {
-  int plane_tile = plane / TILE_NUM * TILE_NUM;
-  int channel_num = prelu_param_->channel_num_;
-  int plane_index = 0;
-  for (; plane_index < plane_tile; plane_index += TILE_NUM) {
-    float *in_plane_ptr = input + plane_index * channel_num;
-    float *out_plane_ptr = output + plane_index * channel_num;
-    int channel_index = 0;
-#if defined(ENABLE_AVX)
-    MS_FLOAT32X8 zero_value_8 = MS_MOV256_F32(0.0f);
-    MS_FLOAT32X8 one_value_8 = MS_MOV256_F32(1.0f);
-    float *negetive_slope_value_8 = prelu_param_->slope_;
-    int div_channel_c8 = prelu_param_->channel_num_ / C8NUM * C8NUM;
-    for (; channel_index < div_channel_c8; channel_index += C8NUM) {
-      MS_FLOAT32X8 slope_value_8 = MS_LD256_F32(negetive_slope_value_8 + channel_index);
-      LOAD256X8_F32(src, in_plane_ptr + channel_index, channel_num)
-      PRELU_CALCULATE_256X8(dst, src)
-      STORE256X8_F32(out_plane_ptr + channel_index, channel_num, dst)
+#ifdef ENABLE_ARM64
+inline void PRelu4x16(const float *in, float *out, float *cur_slope, size_t step) {
+  asm volatile(
+    "mov x10, %[in]\n"
+    "mov x11, %[out]\n"
+    "mov x12, %[cur_slope]\n"
+    "ld1 {v4.4s, v5.4s, v6.4s, v7.4s}, [x12]\n"
+    "ld1 {v0.4s, v1.4s, v2.4s, v3.4s}, [x10], %[step]\n"
+    "fmul v16.4s, v0.4s, v4.4s\n"
+    "fmul v17.4s, v1.4s, v5.4s\n"
+    "fmul v18.4s, v2.4s, v6.4s\n"
+    "fmul v19.4s, v3.4s, v7.4s\n"
+    "fcmgt v20.4s, v0.4s, #0\n"
+    "fcmgt v21.4s, v1.4s, #0\n"
+    "fcmgt v22.4s, v2.4s, #0\n"
+    "fcmgt v23.4s, v3.4s, #0\n"
+    "ld1 {v24.4s, v25.4s, v26.4s, v27.4s}, [x10], %[step]\n"
+    "bif v0.16b, v16.16b, v20.16b\n"
+    "bif v1.16b, v17.16b, v21.16b\n"
+    "bif v2.16b, v18.16b, v22.16b\n"
+    "bif v3.16b, v19.16b, v23.16b\n"
+    "fmul v8.4s, v24.4s, v4.4s\n"
+    "fmul v9.4s, v25.4s, v5.4s\n"
+    "fmul v10.4s, v26.4s, v6.4s\n"
+    "fmul v11.4s, v27.4s, v7.4s\n"
+    "st1 {v0.4s, v1.4s, v2.4s, v3.4s}, [x11], %[step]\n"
+    "fcmgt v12.4s, v24.4s, #0\n"
+    "fcmgt v13.4s, v25.4s, #0\n"
+    "fcmgt v14.4s, v26.4s, #0\n"
+    "fcmgt v15.4s, v27.4s, #0\n"
+    "ld1 {v0.4s, v1.4s, v2.4s, v3.4s}, [x10], %[step]\n"
+    "bif v24.16b, v8.16b, v12.16b\n"
+    "bif v25.16b, v9.16b, v13.16b\n"
+    "bif v26.16b, v10.16b, v14.16b\n"
+    "bif v27.16b, v11.16b, v15.16b\n"
+    "fmul v16.4s, v0.4s, v4.4s\n"
+    "fmul v17.4s, v1.4s, v5.4s\n"
+    "fmul v18.4s, v2.4s, v6.4s\n"
+    "fmul v19.4s, v3.4s, v7.4s\n"
+    "st1 {v24.4s, v25.4s, v26.4s, v27.4s}, [x11], %[step]\n"
+    "fcmgt v20.4s, v0.4s, #0\n"
+    "fcmgt v21.4s, v1.4s, #0\n"
+    "fcmgt v22.4s, v2.4s, #0\n"
+    "fcmgt v23.4s, v3.4s, #0\n"
+    "ld1 {v24.4s, v25.4s, v26.4s, v27.4s}, [x10]\n"
+    "bif v0.16b, v16.16b, v20.16b\n"
+    "bif v1.16b, v17.16b, v21.16b\n"
+    "bif v2.16b, v18.16b, v22.16b\n"
+    "bif v3.16b, v19.16b, v23.16b\n"
+    "fmul v8.4s, v24.4s, v4.4s\n"
+    "fmul v9.4s, v25.4s, v5.4s\n"
+    "fmul v10.4s, v26.4s, v6.4s\n"
+    "fmul v11.4s, v27.4s, v7.4s\n"
+    "fcmgt v12.4s, v24.4s, #0\n"
+    "fcmgt v13.4s, v25.4s, #0\n"
+    "fcmgt v14.4s, v26.4s, #0\n"
+    "fcmgt v15.4s, v27.4s, #0\n"
+    "st1 {v0.4s, v1.4s, v2.4s, v3.4s}, [x11], %[step]\n"
+    "bif v24.16b, v8.16b, v12.16b\n"
+    "bif v25.16b, v9.16b, v13.16b\n"
+    "bif v26.16b, v10.16b, v14.16b\n"
+    "bif v27.16b, v11.16b, v15.16b\n"
+    "st1 {v24.4s, v25.4s, v26.4s, v27.4s}, [x11]\n"
+    :
+    : [ in ] "r"(in), [ out ] "r"(out), [ cur_slope ] "r"(cur_slope), [ step ] "r"(step)
+    : "x10", "x11", "x12", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9", "v10", "v11", "v12", "v13",
+      "v14", "v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27");
+}
+#endif
+
+void PRelu(const float *input, float *output, float *slope, int start, int end, int channel) {
+  int i = start;
+#ifdef ENABLE_ARM64
+  for (; i < end - 3; i += 4) {
+    const float *cur_in = input + i * channel;
+    float *cur_out = output + i * channel;
+    int j = 0;
+    for (; j < channel - 15; j += 16) {
+      const float *in = cur_in + j;
+      float *out = cur_out + j;
+      float *cur_slope = slope + j;
+      size_t step = channel * sizeof(float);
+      PRelu4x16(in, out, cur_slope, step);
+    }
+    for (; j < channel; j++) {
+      cur_out[j] = (cur_in[j] > 0) ? cur_in[j] : (cur_in[j] * slope[j]);
+      cur_out[j + channel] = (cur_in[j + channel] > 0) ? cur_in[j + channel] : cur_in[j + channel] * slope[j];
+      cur_out[j + 2 * channel] =
+        (cur_in[j + 2 * channel] > 0) ? cur_in[j + 2 * channel] : (cur_in[j + 2 * channel] * slope[j]);
+      cur_out[j + 3 * channel] =
+        (cur_in[j + 3 * channel] > 0) ? cur_in[j + 3 * channel] : (cur_in[j + 3 * channel] * slope[j]);
     }
+  }
 #endif
-    // note: First AVX processing, then SSE processing on X86 platform
-#if defined(ENABLE_ARM) || defined(ENABLE_SSE)
-    MS_FLOAT32X4 zero_value = MS_MOVQ_F32(0.0f);
-    MS_FLOAT32X4 one_value = MS_MOVQ_F32(1.0f);
-    float *negetive_slope_value = prelu_param_->slope_;
-    int div_channel = prelu_param_->channel_num_ / C4NUM * C4NUM;
-    for (; channel_index < div_channel; channel_index += C4NUM) {
-      MS_FLOAT32X4 slope_value = MS_LDQ_F32(negetive_slope_value + channel_index);
-      LOAD128X8_F32(src, in_plane_ptr + channel_index, channel_num)
-      PRELU_CALCULATE_128X8(dst, src)
-      STORE128X8_F32(out_plane_ptr + channel_index, channel_num, dst)
+  for (; i < end; i++) {
+    const float *cur_in = input + i * channel;
+    float *cur_out = output + i * channel;
+    int j = 0;
+#if defined(ENABLE_ARM)
+    for (; j < channel - 3; j += 4) {
+      MS_FLOAT32X4 in = MS_LDQ_F32(cur_in + j);
+      MS_FLOAT32X4 s = MS_LDQ_F32(slope + j);
+      MS_FLOAT32X4 mul = MS_MULQ_F32(in, s);
+      MS_FLOAT32X4 zero = MS_MOVQ_F32(0.0f);
+      MS_FLOAT32X4 res = MS_BLENDQ_F32(mul, in, MS_CMPGTQ_F32(in, zero));
+      MS_STQ_F32(cur_out + j, res);
     }
 #endif
-    for (; channel_index < channel_num; channel_index++) {
-      float *in_c = in_plane_ptr + channel_index;
-      float *out_c = out_plane_ptr + channel_index;
-      for (int tile_i = 0; tile_i < TILE_NUM; tile_i++) {
-        float *in_tile = in_c + tile_i * channel_num;
-        float *out_tile = out_c + tile_i * channel_num;
-        const float in_data = in_tile[0];
-        out_tile[0] = (in_data < 0 ? in_data : 0) * prelu_param_->slope_[channel_index] + (in_data > 0 ? in_data : 0);
+    for (; j < channel; j++) {
+      if (cur_in[j] > 0) {
+        cur_out[j] = cur_in[j];
+      } else {
+        cur_out[j] = cur_in[j] * slope[j];
       }
     }
   }
-
-  for (; plane_index < plane; plane_index++) {
-    float *in_plane_ptr = input + plane_index * channel_num;
-    float *out_plane_ptr = output + plane_index * channel_num;
-    for (int channel_index = 0; channel_index < channel_num; channel_index++) {
-      const float in_data = in_plane_ptr[channel_index];
-      out_plane_ptr[channel_index] =
-        (in_data < 0 ? in_data : 0) * prelu_param_->slope_[channel_index] + (in_data > 0 ? in_data : 0);
-    }
-  }
 }
 
-void PReluShareChannel(float *input, float *output, const PReluParameter *prelu_param_, int task_id) {
-  for (int j = task_id; j < prelu_param_->tile_block_; j += prelu_param_->op_parameter_.thread_num_) {
-    int cal_index;
-#if defined(ENABLE_ARM64) || defined(ENABLE_AVX)
-    cal_index = j * 64;
-#else
-    cal_index = j * 32;
-#endif
-
-    float *input_ptr = input + cal_index;
-    float *output_ptr = input + cal_index;
-#if defined(ENABLE_AVX)
-    MS_FLOAT32X8 zero_value_8 = MS_MOV256_F32(0);
-    MS_FLOAT32X8 one_value_8 = MS_MOV256_F32(1.0f);
-    MS_FLOAT32X8 slope_value_8 = MS_MOV256_F32(prelu_param_->slope_[0]);
-    LOAD256X8_F32(src, input_ptr, 8)
-    PRELU_CALCULATE_256X8(dst, src)
-    STORE256X8_F32(output_ptr, 8, dst)
-#elif defined(ENABLE_ARM) || (defined(ENABLE_SSE) && !defined(ENABLE_AVX))
-    MS_FLOAT32X4 zero_value = MS_MOVQ_F32(0);
-    MS_FLOAT32X4 one_value = MS_MOVQ_F32(1.0f);
-    MS_FLOAT32X4 slope_value = MS_MOVQ_F32(prelu_param_->slope_[0]);
-
-    LOAD128X8_F32(src, input_ptr, 4)
-#ifdef ENABLE_ARM64
-    LOAD128X8_F32(src1, input_ptr + 32, 4)
-#endif
-    PRELU_CALCULATE_128X8(dst, src)
-#ifdef ENABLE_ARM64
-    PRELU_CALCULATE_128X8(dst1, src1)
-#endif
-    STORE128X8_F32(output_ptr, 4, dst)
-#ifdef ENABLE_ARM64
-    STORE128X8_F32(output_ptr + 32, 4, dst1)
-#endif
-
-#else
-    const int cal_per_time = 32;
-    for (int i = 0; i < cal_per_time; ++i) {
-      float data = input_ptr[i];
-      output_ptr[i] = (data < 0 ? data : 0) * prelu_param_->slope_[0] + (data > 0 ? data : 0);
+void PReluShareChannel(const float *input, float *output, float slope, int start, int end) {
+  for (int i = start; i < end; i++) {
+    if (input[i] > 0) {
+      output[i] = input[i];
+    } else {
+      output[i] = input[i] * slope;
     }
-#endif
   }
 }
diff --git a/mindspore/lite/nnacl/fp32/prelu_fp32.h b/mindspore/lite/nnacl/fp32/prelu_fp32.h
index f9d16a2667..1203b2e9a0 100644
--- a/mindspore/lite/nnacl/fp32/prelu_fp32.h
+++ b/mindspore/lite/nnacl/fp32/prelu_fp32.h
@@ -22,39 +22,11 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-void PRelu(float *input, float *output, const PReluParameter *prelu_param_, int task_id);
+void PRelu(const float *input, float *output, float *slope, int start, int end, int channel);
 
-void PReluShareChannel(float *input, float *output, const PReluParameter *prelu_param_, int task_id);
+void PReluShareChannel(const float *input, float *output, float slope, int start, int end);
 #ifdef __cplusplus
 }
 #endif
 
-#define PRELU_CALCULATE_256X8(dst, src)                                                                          \
-  MS_FLOAT32X8 dst##1 =                                                                                          \
-    MS_MUL256_F32(src##1, MS_BLEND256_F32(slope_value_8, one_value_8, MS_CMP256_F32(src##1, zero_value_8, 30))); \
-  MS_FLOAT32X8 dst##2 =                                                                                          \
-    MS_MUL256_F32(src##2, MS_BLEND256_F32(slope_value_8, one_value_8, MS_CMP256_F32(src##2, zero_value_8, 30))); \
-  MS_FLOAT32X8 dst##3 =                                                                                          \
-    MS_MUL256_F32(src##3, MS_BLEND256_F32(slope_value_8, one_value_8, MS_CMP256_F32(src##3, zero_value_8, 30))); \
-  MS_FLOAT32X8 dst##4 =                                                                                          \
-    MS_MUL256_F32(src##4, MS_BLEND256_F32(slope_value_8, one_value_8, MS_CMP256_F32(src##4, zero_value_8, 30))); \
-  MS_FLOAT32X8 dst##5 =                                                                                          \
-    MS_MUL256_F32(src##5, MS_BLEND256_F32(slope_value_8, one_value_8, MS_CMP256_F32(src##5, zero_value_8, 30))); \
-  MS_FLOAT32X8 dst##6 =                                                                                          \
-    MS_MUL256_F32(src##6, MS_BLEND256_F32(slope_value_8, one_value_8, MS_CMP256_F32(src##6, zero_value_8, 30))); \
-  MS_FLOAT32X8 dst##7 =                                                                                          \
-    MS_MUL256_F32(src##7, MS_BLEND256_F32(slope_value_8, one_value_8, MS_CMP256_F32(src##7, zero_value_8, 30))); \
-  MS_FLOAT32X8 dst##8 =                                                                                          \
-    MS_MUL256_F32(src##8, MS_BLEND256_F32(slope_value_8, one_value_8, MS_CMP256_F32(src##8, zero_value_8, 30)));
-
-#define PRELU_CALCULATE_128X8(dst, src)                                                                                \
-  MS_FLOAT32X4 dst##1 = MS_MULQ_F32(src##1, MS_BLENDQ_F32(slope_value, one_value, MS_CMPGTQ_F32(src##1, zero_value))); \
-  MS_FLOAT32X4 dst##2 = MS_MULQ_F32(src##2, MS_BLENDQ_F32(slope_value, one_value, MS_CMPGTQ_F32(src##2, zero_value))); \
-  MS_FLOAT32X4 dst##3 = MS_MULQ_F32(src##3, MS_BLENDQ_F32(slope_value, one_value, MS_CMPGTQ_F32(src##3, zero_value))); \
-  MS_FLOAT32X4 dst##4 = MS_MULQ_F32(src##4, MS_BLENDQ_F32(slope_value, one_value, MS_CMPGTQ_F32(src##4, zero_value))); \
-  MS_FLOAT32X4 dst##5 = MS_MULQ_F32(src##5, MS_BLENDQ_F32(slope_value, one_value, MS_CMPGTQ_F32(src##5, zero_value))); \
-  MS_FLOAT32X4 dst##6 = MS_MULQ_F32(src##6, MS_BLENDQ_F32(slope_value, one_value, MS_CMPGTQ_F32(src##6, zero_value))); \
-  MS_FLOAT32X4 dst##7 = MS_MULQ_F32(src##7, MS_BLENDQ_F32(slope_value, one_value, MS_CMPGTQ_F32(src##7, zero_value))); \
-  MS_FLOAT32X4 dst##8 = MS_MULQ_F32(src##8, MS_BLENDQ_F32(slope_value, one_value, MS_CMPGTQ_F32(src##8, zero_value)));
-
 #endif  // MINDSPORE_LITE_NNACL_FP32_PRELU_H_
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/prelu_fp32.cc b/mindspore/lite/src/runtime/kernel/arm/fp32/prelu_fp32.cc
index 1acc9731d1..9e503c6486 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/prelu_fp32.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/prelu_fp32.cc
@@ -27,8 +27,7 @@ using mindspore::lite::RET_OK;
 using mindspore::schema::PrimitiveType_PReLUFusion;
 
 namespace mindspore::kernel {
-namespace {
-int PReluRun(void *cdata, int task_id) {
+static int PReluRun(void *cdata, int task_id) {
   auto PRelu = reinterpret_cast<PReluCPUKernel *>(cdata);
   auto ret = PRelu->DoExcute(task_id);
   if (ret != RET_OK) {
@@ -37,7 +36,6 @@ int PReluRun(void *cdata, int task_id) {
   }
   return RET_OK;
 }
-}  // namespace
 
 int PReluCPUKernel::Init() {
   if (in_tensors_[1]->ElementsNum() == 1) {
@@ -52,26 +50,22 @@ int PReluCPUKernel::Init() {
 }
 
 int PReluCPUKernel::DoExcute(int task_id) {
+  int thread_num = prelu_param_->op_parameter_.thread_num_;
   if (prelu_param_->channelShared) {
-    PReluShareChannel(input_data_, output_data_, prelu_param_, task_id);
+    int step = UP_DIV(prelu_param_->input_num_, thread_num);
+    int start = task_id * step;
+    int end = MSMIN(start + step, prelu_param_->input_num_);
+    PReluShareChannel(input_data_, output_data_, prelu_param_->slope_[0], start, end);
   } else {
-    int res_plane = prelu_param_->input_num_ - task_id * prelu_param_->tile_block_;
-    int plane = MSMIN(prelu_param_->tile_block_, res_plane);
-    if (plane <= 0) {
-      return RET_OK;
-    }
-    float *in = input_data_ + task_id * prelu_param_->tile_block_ * prelu_param_->channel_num_;
-    float *out = output_data_ + task_id * prelu_param_->tile_block_ * prelu_param_->channel_num_;
-    PRelu(in, out, prelu_param_, plane);
+    int step = UP_DIV(prelu_param_->tile_block_, thread_num);
+    int start = task_id * step;
+    int end = MSMIN(start + step, prelu_param_->tile_block_);
+    PRelu(input_data_, output_data_, prelu_param_->slope_, start, end, prelu_param_->channel_num_);
   }
   return RET_OK;
 }
 
 int PReluCPUKernel::ReSize() {
-  if (prelu_param_->channelShared) {
-    return RET_OK;
-  }
-
   auto input_tensor = in_tensors_.at(0);
   auto in_shape = input_tensor->shape();
   auto n_dim = in_shape.size();
@@ -81,46 +75,19 @@ int PReluCPUKernel::ReSize() {
     input_plane *= in_shape.at(i);
   }
 
-  prelu_param_->input_num_ = input_plane;
-  prelu_param_->tile_block_ = UP_DIV(UP_DIV(input_plane, TILE_NUM), op_parameter_->thread_num_) * TILE_NUM;
+  prelu_param_->input_num_ = input_plane * channel_num;
+  prelu_param_->tile_block_ = input_plane;
   prelu_param_->channel_num_ = channel_num;
   return RET_OK;
 }
 
-int PReluCPUKernel::ProcessShareChannelInput() {
-  auto input_tensor = in_tensors_.at(0);
-  prelu_param_->input_num_ = input_tensor->ElementsNum();
-  int tile = 32;
-#if defined(ENABLE_ARM64) || defined(ENABLE_AVX)
-  tile = 64;
-#endif
-  prelu_param_->tile_block_ = UP_DIV(prelu_param_->input_num_, tile);
-  input_data_ =
-    reinterpret_cast<float *>(context_->allocator->Malloc(prelu_param_->tile_block_ * tile * sizeof(float)));
-  if (input_data_ == nullptr) {
-    MS_LOG(ERROR) << "malloc input_data_ failed.";
-    return RET_ERROR;
-  }
-  memcpy(input_data_, ori_input_, prelu_param_->input_num_ * sizeof(float));
-  return RET_OK;
-}
-
 int PReluCPUKernel::Run() {
   MS_ASSERT(in_tensors_.size() >= 2);
   auto input_tensor = in_tensors_[0];
-  ori_input_ = reinterpret_cast<float *>(input_tensor->data_c());
+  input_data_ = reinterpret_cast<float *>(input_tensor->data_c());
   output_data_ = reinterpret_cast<float *>(out_tensors_.at(kOutputIndex)->data_c());
-  MS_ASSERT(ori_input_);
+  MS_ASSERT(input_data_);
   MS_ASSERT(output_data_);
-  if (prelu_param_->channelShared) {
-    auto ret = ProcessShareChannelInput();
-    if (ret != RET_OK) {
-      MS_LOG(ERROR) << "ProcessShareChannel failed.";
-      return ret;
-    }
-  } else {
-    input_data_ = ori_input_;
-  }
 
   // negative slope tensor
   auto negative_slope_tensor = in_tensors_.at(1);
@@ -129,14 +96,9 @@ int PReluCPUKernel::Run() {
   auto ret = ParallelLaunch(this->context_->thread_pool_, PReluRun, this, prelu_param_->op_parameter_.thread_num_);
   if (ret != RET_OK) {
     MS_LOG(ERROR) << "PRelu Run error: error_code[" << ret << "]";
-    context_->allocator->Free(input_data_);
     return RET_ERROR;
   }
 
-  if (prelu_param_->channelShared) {
-    memcpy(output_data_, input_data_, prelu_param_->input_num_ * sizeof(float));
-    context_->allocator->Free(input_data_);
-  }
   return RET_OK;
 }
 
diff --git a/mindspore/lite/src/runtime/kernel/arm/fp32/prelu_fp32.h b/mindspore/lite/src/runtime/kernel/arm/fp32/prelu_fp32.h
index 9841449586..b235f3d76c 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp32/prelu_fp32.h
+++ b/mindspore/lite/src/runtime/kernel/arm/fp32/prelu_fp32.h
@@ -35,11 +35,9 @@ class PReluCPUKernel : public LiteKernel {
   int ReSize() override;
   int Run() override;
   int DoExcute(int task_id);
-  int ProcessShareChannelInput();
 
  private:
   PReluParameter *prelu_param_;
-  float *ori_input_ = nullptr;
   float *input_data_ = nullptr;
   float *output_data_ = nullptr;
 };