diff --git a/include/easypr/chars_recognise.h b/include/easypr/chars_recognise.h
index 2372904..1769008 100644
--- a/include/easypr/chars_recognise.h
+++ b/include/easypr/chars_recognise.h
@@ -24,6 +24,8 @@ class CCharsRecognise {
  public:
   CCharsRecognise();
 
+  ~CCharsRecognise();
+
   //! 字符分割与识别
   int charsRecognise(Mat, String&);
 
diff --git a/include/easypr/plate_detect.h b/include/easypr/plate_detect.h
index 0640fa5..c30cc48 100644
--- a/include/easypr/plate_detect.h
+++ b/include/easypr/plate_detect.h
@@ -25,9 +25,11 @@ class CPlateDetect {
  public:
   CPlateDetect();
 
+  ~CPlateDetect();
+
   //! 深度车牌检测，使用颜色与二次Sobel法综合
   int plateDetect(Mat src, vector<CPlate>& resultVec,
-                      bool showDetectArea = true, int index = 0);
+                  bool showDetectArea = true, int index = 0);
 
   //! 展示中间的结果
   int showResult(const Mat& result);
diff --git a/include/easypr/util.h b/include/easypr/util.h
index da7bce6..4583a62 100644
--- a/include/easypr/util.h
+++ b/include/easypr/util.h
@@ -14,6 +14,14 @@
 #define OS_LINUX
 #endif
 
+#ifndef SAFE_RELEASE
+#define SAFE_RELEASE(p) \
+  if ((p)) {            \
+    delete (p);         \
+    (p) = NULL;         \
+  }
+#endif
+
 namespace easypr {
 class Utils {
  public:
diff --git a/src/core/chars_recognise.cpp b/src/core/chars_recognise.cpp
index 3fe49bf..a327778 100644
--- a/src/core/chars_recognise.cpp
+++ b/src/core/chars_recognise.cpp
@@ -1,4 +1,5 @@
 #include "easypr/chars_recognise.h"
+#include "easypr/util.h"
 
 /*! \namespace easypr
 Namespace where all the C++ EasyPR functionality resides
@@ -6,11 +7,15 @@ Namespace where all the C++ EasyPR functionality resides
 namespace easypr {
 
 CCharsRecognise::CCharsRecognise() {
-  // cout << "CCharsRecognise" << endl;
   m_charsSegment = new CCharsSegment();
   m_charsIdentify = new CCharsIdentify();
 }
 
+CCharsRecognise::~CCharsRecognise() {
+  SAFE_RELEASE(m_charsSegment);
+  SAFE_RELEASE(m_charsIdentify);
+}
+
 void CCharsRecognise::LoadANN(string s) {
   m_charsIdentify->LoadModel(s.c_str());
 }
diff --git a/src/core/plate_detect.cpp b/src/core/plate_detect.cpp
index 6271c94..6de8934 100644
--- a/src/core/plate_detect.cpp
+++ b/src/core/plate_detect.cpp
@@ -15,10 +15,15 @@ CPlateDetect::CPlateDetect() {
   m_maxPlates = 3;
 }
 
+CPlateDetect::~CPlateDetect() {
+  SAFE_RELEASE(m_plateLocate);
+  SAFE_RELEASE(m_plateJudge);
+}
+
 void CPlateDetect::LoadSVM(string s) { m_plateJudge->LoadModel(s.c_str()); }
 
 int CPlateDetect::plateDetect(Mat src, vector<CPlate>& resultVec,
-                                  bool showDetectArea, int index) {
+                              bool showDetectArea, int index) {
   vector<Mat> resultPlates;
 
   vector<CPlate> color_Plates;