diff --git a/README_zh.md b/README_zh.md
index ef98166f84a0e65c9ce3a771da61a73e98f72429..191cfd874e5ebefeb854f443d0eeb22568aa98c8 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -14,6 +14,7 @@
 - 代码签名使能：在用户态提供代码签名校验的相关接口和逻辑，供应用安装的时候调用，为应用和代码文件使能代码签名。
 - 本地代码签名：在设备侧运行签名服务给本地代码提供签名接口，为AOT生成的机器码文件生成代码签名。
 - 代码属性设置：支持代码所有者标记及校验，提供配置XPM验签地址区接口。
+- JIT(Just In Time)代码签名：使用代码签名技术来保护编译出的JIT代码的完整性，防止恶意代码被注入到JIT代码中。
 
 ## 目录
 
@@ -24,7 +25,8 @@
 │       ├── code_sign_attr_utils # 属性设置接口
 │       ├── code_sign_utils      # 使能接口
 │       ├── common               # 公共基础能力
-│       └── local_code_sign      # 本地签名接口
+│       ├── jit_code_sign        # JIT代码签名
+│       └── local_code_sign      # 本地签名
 ├── services                     # 服务层
 │    ├── key_enable              # 证书初始化
 │    └── local_code_sign         # 本地签名服务
@@ -51,6 +53,16 @@
 | int32_t SignLocalCode(const std::string &ownerID, const std::string &filePath, ByteBuffer &signature); | 带OwnerId的本地代码签名 |
 | int InitXpmRegion(void); | 初始化XPM地址 |
 | int SetXpmOwnerId(uint32_t idType, const char *ownerId); | 设置OwnerId |
+| int32_t RegisterTmpBuffer(JitCodeSignerBase *signer, void *tmpBuffer); | 注册临时Buffer起始地址 |
+| int32_t AppendInstruction(JitCodeSignerBase *signer, Instr instr); | 对添加到临时Buffer的指令签名 |
+| int32_t AppendData(JitCodeSignerBase *signer, const void *const data, uint32_t size); | 对添加到临时Buffer的数据签名 |
+| int32_t WillFixUp(JitCodeSignerBase *signer, uint32_t n = 1); | 声明下n条指令待更新 |
+| int32_t PatchInstruction(JitCodeSignerBase *signer, int offset, Instr instr); | 更新缓冲区的偏移处指令签名 |
+| int32_t PatchInstruction(JitCodeSignerBase *signer, void *address, Instr insn); | 更新对应地址指令签名 |
+| int32_t PatchData(JitCodeSignerBase *signer, int offset, const void *const data, uint32_t size); | 更新缓冲区偏移处数据签名 |
+| int32_t PatchData(JitCodeSignerBase *signer, void *address, const void *const data, uint32_t size); | 更新对应地址数据签名 |
+| int32_t ResetJitCode(void *jitMemory, int size); | 重置JIT内存 |
+| int32_t CopyToJitCode(JitCodeSignerBase *signer, void *jitMemory, void *tmpBuffer, int size); | 将JIT代码复制到JIT内存 |
 
 ### 签名工具使用指南
 
diff --git a/figures/codesign.png b/figures/codesign.png
index 8a494cb95ef899f5680a596a9ca8249a924357c6..65cd5f970b6669f8d5e4687bf08b84580d7a70ad 100644
Binary files a/figures/codesign.png and b/figures/codesign.png differ
diff --git a/interfaces/innerkits/jit_code_sign/include/pac_sign_ctx.h b/interfaces/innerkits/jit_code_sign/include/pac_sign_ctx.h
index 57be18d87fee3956391f9f8cb9dc2820bcd9609f..914dc3429481f9296b2ab6eb1673c639ce6bc47e 100644
--- a/interfaces/innerkits/jit_code_sign/include/pac_sign_ctx.h
+++ b/interfaces/innerkits/jit_code_sign/include/pac_sign_ctx.h
@@ -40,7 +40,6 @@ public:
     void Init(int index);
     void InitSalt();
     uint32_t Update(uint32_t value);
-    void Finalize();
     uint32_t SignSingle(uint32_t value, uint32_t index);
     void SetIndex(uint32_t index);
     uint32_t GetSalt();
diff --git a/interfaces/innerkits/jit_code_sign/src/pac_sign_ctx.cpp b/interfaces/innerkits/jit_code_sign/src/pac_sign_ctx.cpp
index 863a03a2ca391e3fbf93f9789e7364fe5c7b12e2..ef86c14aa21f929dad10a0d0d1d103209edc985c 100644
--- a/interfaces/innerkits/jit_code_sign/src/pac_sign_ctx.cpp
+++ b/interfaces/innerkits/jit_code_sign/src/pac_sign_ctx.cpp
@@ -151,13 +151,6 @@ uint32_t PACSignCtx::Update(uint32_t value)
     return signature;
 }
 
-void PACSignCtx::Finalize()
-{
-    if (purpose_ == CTXPurpose::SIGN) {
-        (void) GetRealContext();
-    }
-}
-
 uint32_t PACSignCtx::SignSingle(uint32_t value, uint32_t index)
 {
     uint64_t paddingContext = PaddingContext(SIGN_WITHOUT_CONTEXT, index);
diff --git a/test/unittest/jit_code_sign_test.cpp b/test/unittest/jit_code_sign_test.cpp
index 2b60e475449d4f33b72492424d212e9736492b89..69d25aa59eb689fca845837a9498501fd195c7c6 100644
--- a/test/unittest/jit_code_sign_test.cpp
+++ b/test/unittest/jit_code_sign_test.cpp
@@ -24,6 +24,7 @@
 #include <unistd.h>
 
 #include "errcode.h"
+#include "jit_code_signer_factory.h"
 #include "jit_buffer_integrity.h"
 #include "pac_sign_ctx.h"
 
@@ -121,6 +122,7 @@ public:
 
     static void SetUpTestCase()
     {
+        EXPECT_EQ(JitCodeSignerFactory::IsSupportJitCodeSigner(), true);
         JitFortPrepare();
         AllocJitMemory();
     };