diff --git a/readme.md b/readme.md
index 1845cee..72ccc49 100644
--- a/readme.md
+++ b/readme.md
@@ -1,7 +1,7 @@
 # CSON
 
-![version](https://img.shields.io/badge/version-1.0.0-brightgreen.svg)
-![build](https://img.shields.io/badge/build-2019.8.27-brightgreen.svg)
+![version](https://img.shields.io/badge/version-1.0.1-brightgreen.svg)
+![build](https://img.shields.io/badge/build-2019.9.4-brightgreen.svg)
 
 基于[cJSON](https://github.com/kbranigan/cJSON),运行于C语言平台的json-struct模型解析工具
 
diff --git a/src/cson.c b/src/cson.c
index 5771639..9399334 100644
--- a/src/cson.c
+++ b/src/cson.c
@@ -245,6 +245,10 @@ void *csonDecodeObject(cJSON *json, CsonModel *model, int modelSize)
 {
     CSON_ASSERT(json, return NULL);
 
+    if (json->type == cJSON_NULL) {
+        return NULL;
+    }
+
     short objSize = 0;
     for (short i = 0; i < modelSize; i++)
     {
@@ -452,7 +456,9 @@ cJSON* csonEncodeArray(void *base, CsonType elementType, short arraySize)
  */
 cJSON* csonEncodeObject(void *obj, CsonModel *model, int modelSize)
 {
-    CSON_ASSERT(obj, return NULL);
+    if (!obj) {
+        return cJSON_CreateNull();
+    }
     cJSON *root = cJSON_CreateObject();
 
     for (short i = 0; i < modelSize; i++)
@@ -461,7 +467,6 @@ cJSON* csonEncodeObject(void *obj, CsonModel *model, int modelSize)
         {
         case CSON_TYPE_CHAR:
             csonEncodeNumber(root, model[i].key, *(char *)((int)obj + model[i].offset));
-            // cJSON_AddNumberToObject(root, model[i].key, *(char *)((int)obj + model[i].offset));
             break;
         case CSON_TYPE_SHORT:
             csonEncodeNumber(root, model[i].key, *(short *)((int)obj + model[i].offset));
@@ -483,7 +488,6 @@ cJSON* csonEncodeObject(void *obj, CsonModel *model, int modelSize)
             break;
         case CSON_TYPE_STRING:
             csonEncodeString(root, model[i].key, (char *)(*(int *)((int)obj + model[i].offset)));
-            // cJSON_AddStringToObject(root, model[i].key, (char *)(*(int *)((int)obj + model[i].offset)));
             break;
         case CSON_TYPE_LIST:
             cJSON_AddItemToObject(root, model[i].key, 
diff --git a/src/cson.h b/src/cson.h
index ccedb28..79cfdd6 100644
--- a/src/cson.h
+++ b/src/cson.h
@@ -16,7 +16,7 @@
 #include "cJSON.h"
 
 
-#define     CSON_VERSION        "1.0.0"         /**< CSON版本 */
+#define     CSON_VERSION        "1.0.1"         /**< CSON版本 */
 
 /**
  * @defgroup CSON cson