diff --git a/interfaces/innerkits/unwinder/src/elf/dfx_symbols.cpp b/interfaces/innerkits/unwinder/src/elf/dfx_symbols.cpp
index a9c1c9de60f1e1d499573baacdd734e80465bb54..999344e80378d5215b3a8c4c9e1754d9bee4f1c8 100644
--- a/interfaces/innerkits/unwinder/src/elf/dfx_symbols.cpp
+++ b/interfaces/innerkits/unwinder/src/elf/dfx_symbols.cpp
@@ -179,7 +179,8 @@ std::string DfxSymbols::Demangle(const std::string& buf)
 #endif
 
 #if defined(CJ_DEMANGLE) && defined(__LP64__)
-    if ((buf[1] == 'C') && (demangledStr == nullptr)) {
+    if ((buf[0] == '_') && (buf[1] == 'C') && (buf[2] == 'N') &&
+        (demangledStr == nullptr)) {
         std::lock_guard<std::mutex> lck(g_cj_mutex);
         if (FindCJDemangleFunction()) {
             demangledStr = g_cjDemangleFn(bufStr);
diff --git a/test/unittest/unwind/symbols_test.cpp b/test/unittest/unwind/symbols_test.cpp
index dd4296d1dbf20d720985714388cd1b6f49bdc0ba..1539084a528c475ecfe0af709e5df7dbca13e6e9 100644
--- a/test/unittest/unwind/symbols_test.cpp
+++ b/test/unittest/unwind/symbols_test.cpp
@@ -215,8 +215,8 @@ HWTEST_F(DfxSymbolsTest, DfxDemangleTest003, TestSize.Level2)
 HWTEST_F(DfxSymbolsTest, DfxDemangleTest004, TestSize.Level2)
 {
     GTEST_LOG_(INFO) << "DfxDemangleTest004: start.";
-    std::filesystem::path runtimePath("/system/lib64/chipset-sdk/libcangjie-demangle.so");
-    if (std::filesystem::exists(runtimePath)) {
+    std::filesystem::path demanglePath("/system/lib64/platformsdk/cjsdk/libcangjie-demangle.so");
+    if (std::filesystem::exists(demanglePath)) {
         EXPECT_EQ("std.time.initLocalDefault()",
             DfxSymbols::Demangle("_CN8std.time16initLocalDefaultHv"));
         EXPECT_EQ("std.core.Error::init()", DfxSymbols::Demangle("_CN8std.core5Error6<init>Hv"));
@@ -228,6 +228,21 @@ HWTEST_F(DfxSymbolsTest, DfxDemangleTest004, TestSize.Level2)
     }
     GTEST_LOG_(INFO) << "DfxDemangleTest004: end.";
 }
+
+/**
+ * @tc.name: DfxDemangleTest005
+ * @tc.desc: test DfxSymbols demangle functions with cangjie
+ * @tc.type: FUNC
+ */
+HWTEST_F(DfxSymbolsTest, DfxDemangleTest005, TestSize.Level2)
+{
+    GTEST_LOG_(INFO) << "DfxDemangleTest005: start.";
+    EXPECT_EQ("-CNabc", DfxSymbols::Demangle("-CNabc"));
+    EXPECT_EQ("_Cabc", DfxSymbols::Demangle("_Cabc"));
+    EXPECT_EQ("_CNabc", DfxSymbols::Demangle("_CNabc"));
+    EXPECT_EQ("_CDabc", DfxSymbols::Demangle("_CDabc"));
+    GTEST_LOG_(INFO) << "DfxDemangleTest005: end.";
+}
 } // namespace HiviewDFX
 } // namespace OHOS