diff --git a/es5/client.js b/es5/client.js
index 8abf44d..777c72a 100644
--- a/es5/client.js
+++ b/es5/client.js
@@ -127,7 +127,7 @@ var Client = function () {
   }, {
     key: 'request',
     value: function () {
-      var _ref = _asyncToGenerator(_regenerator2.default.mark(function _callee(method, path, query, body) {
+      var _ref = _asyncToGenerator( /*#__PURE__*/_regenerator2.default.mark(function _callee(method, path, query, body) {
         var headers = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {};
         var url, postBody, buff, digest, md5, stringToSign, signature, response, responseBody, contentType, code, requestid, err;
         return _regenerator2.default.wrap(function _callee$(_context) {
@@ -428,8 +428,32 @@ var Client = function () {
   }, {
     key: 'createFunction',
     value: function createFunction(serviceName, options, headers) {
+      this.normalizeParams(options);
       return this.post(`/services/${serviceName}/functions`, options, headers);
     }
+  }, {
+    key: 'normalizeParams',
+    value: function normalizeParams(opts) {
+      if (opts.functionName) {
+        opts.functionName = String(opts.functionName);
+      }
+
+      if (opts.runtime) {
+        opts.runtime = String(opts.runtime);
+      }
+
+      if (opts.handler) {
+        opts.handler = String(opts.handler);
+      }
+
+      if (opts.memorySize) {
+        opts.memorySize = parseInt(opts.memorySize);
+      }
+
+      if (opts.timeout) {
+        opts.timeout = parseInt(opts.timeout);
+      }
+    }
 
     /**
      * 获取Function列表
@@ -494,6 +518,7 @@ var Client = function () {
   }, {
     key: 'updateFunction',
     value: function updateFunction(serviceName, functionName, options, headers) {
+      this.normalizeParams(options);
       var path = `/services/${serviceName}/functions/${functionName}`;
       return this.put(path, options, headers);
     }
diff --git a/lib/client.js b/lib/client.js
index 769e471..8f405f8 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -322,9 +322,33 @@ class Client {
    * @return {Promise} 返回 Function 信息
    */
   createFunction(serviceName, options, headers) {
+    this.normalizeParams(options)
     return this.post(`/services/${serviceName}/functions`, options, headers);
   }
 
+  normalizeParams(opts) {
+    if (opts.functionName){
+      opts.functionName = String(opts.functionName)
+    }
+
+    if (opts.runtime){
+      opts.runtime = String(opts.runtime)
+    }
+
+    if (opts.handler){
+       opts.handler = String(opts.handler)
+    }
+
+    if (opts.memorySize){
+      opts.memorySize = parseInt(opts.memorySize)
+    }
+
+    if (opts.timeout){
+      opts.timeout = parseInt(opts.timeout)
+
+    }   
+  }
+
   /**
    * 获取Function列表
    *
@@ -373,6 +397,7 @@ class Client {
    * @return {Promise} 返回 Object(包含headers和data属性[Function信息])
    */
   updateFunction(serviceName, functionName, options, headers) {
+    this.normalizeParams(options)
     const path = `/services/${serviceName}/functions/${functionName}`;
     return this.put(path, options, headers);
   }
diff --git a/test/client.test.js b/test/client.test.js
index d026d49..0ef960b 100644
--- a/test/client.test.js
+++ b/test/client.test.js
@@ -304,6 +304,39 @@ describe('client test', function () {
       }).to.throwException(/"event" must be String or Buffer/);
     });
 
+    it('createFunction with invalid runtime should fail', async function() {
+      try {
+        await client.createFunction(serviceName, {
+              functionName: "test_invalid_runtime_function",
+              description: 'function desc',
+              memorySize: 128,
+              handler: 'main.handler',
+              runtime: 10,
+              timeout: 10,
+              code: {
+                zipFile: fs.readFileSync(path.join(__dirname, 'figures/test.zip'), 'base64')
+              }
+          });
+      } catch (ex) {
+        expect(ex.stack).to.contain('FCInvalidArgumentError');
+        expect(ex.stack).to.contain('Runtime is set to an invalid value');
+      }
+
+    });
+
+    it('updateFunction with invalid runtime should fail', async function() {
+      try {
+        await client.updateFunction(serviceName, functionName, {
+              description: 'updated function desc',
+              runtime: 10
+            });
+      } catch (ex) {
+        expect(ex.stack).to.contain('FCInvalidArgumentError');
+        expect(ex.stack).to.contain('Runtime is set to an invalid value');
+      }
+
+    });
+
     it('deleteFunction should ok', async function() {
       await client.deleteFunction(serviceName, functionName);
       // No exception, no failed