diff --git a/mindspore/lite/src/runtime/kernel/arm/fp16/arithmetic_fp16.cc b/mindspore/lite/src/runtime/kernel/arm/fp16/arithmetic_fp16.cc
index b6edbc2838..c03a1ef569 100644
--- a/mindspore/lite/src/runtime/kernel/arm/fp16/arithmetic_fp16.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/fp16/arithmetic_fp16.cc
@@ -258,4 +258,5 @@ REG_KERNEL(kCPU, kNumberTypeFloat16, PrimitiveType_LessEqual, CpuArithmeticFp16K
 REG_KERNEL(kCPU, kNumberTypeFloat16, PrimitiveType_Greater, CpuArithmeticFp16KernelCreator)
 REG_KERNEL(kCPU, kNumberTypeFloat16, PrimitiveType_GreaterEqual, CpuArithmeticFp16KernelCreator)
 REG_KERNEL(kCPU, kNumberTypeFloat16, PrimitiveType_Eltwise, CpuArithmeticFp16KernelCreator)
+REG_KERNEL(kCPU, kNumberTypeFloat16, PrimitiveType_SquaredDifference, CpuArithmeticFp16KernelCreator)
 }  // namespace mindspore::kernel