diff --git a/src/Trie.hpp b/src/Trie.hpp
index ff88e79..5eaacf2 100644
--- a/src/Trie.hpp
+++ b/src/Trie.hpp
@@ -71,13 +71,16 @@ namespace CppJieba
             }
             Trie(const string& filePath)
             {
-                Trie();
+                new (this) Trie();
                 _setInitFlag(init(filePath));
             }
             ~Trie()
             {
                 _deleteNode(_root);
             }
+        private:
+            
+            
         public:
             bool init(const string& filePath)
             {
diff --git a/test/unittest/TTrie.cpp b/test/unittest/TTrie.cpp
index 1d9fdee..1ccbb98 100644
--- a/test/unittest/TTrie.cpp
+++ b/test/unittest/TTrie.cpp
@@ -5,8 +5,18 @@ using namespace CppJieba;
 
 static const char* const DICT_FILE = "../dict/extra_dict/jieba.dict.small.utf8";
 
+TEST(TrieTest, NewAndDelete)
+{
+    Trie * trie;
+    trie = new Trie(DICT_FILE);
+    delete trie;
+    trie = new Trie();
+    delete trie;
+}
+
 TEST(TrieTest, Test1)
 {
+
     string s1, s2;
     Trie trie;
     ASSERT_TRUE(trie.init(DICT_FILE));