diff --git a/src/hash/hash.c b/src/hash/hash.c
index b69a662..6381381 100644
--- a/src/hash/hash.c
+++ b/src/hash/hash.c
@@ -9,13 +9,29 @@ unsigned int conf_hash_func2(const char *key);
 int conf_hash_search(CONF_ARG *arg,char *key,CONF_VALUE **value);
 //插入数据
 void conf_hash_insert(CONF_ARG *arg,CONF_VALUE *value);
+//复制哈希表
+void _conf_hash_copy(CONF_ARG *arg,CONF_ARG *new,int len);
+//检测数据是否在表中
+int conf_hash_in(CONF_ARG *arg,char *key,int len);
 
-void conf_value_insert(CONF_ARG *arg,CONF_VALUE *value,int len)
+int conf_value_insert(CONF_ARG *arg,CONF_VALUE *value,int len)
 {
 	 /* hash为最终的hash值
 	 * hash2为临时hash值 */
 	int hash,hash2;
 
+	if(conf_hash_in(arg,value->key,len))
+	{
+		free(value->key);
+		while(*value->value)
+		{
+			free(*value->value);
+			++value->value;
+		}
+		free(value);
+
+		return 0;
+	}
 	//默认使用第一个哈希函数
 	hash=hash2=conf_hash_func1(value->key)%len;
 
@@ -35,9 +51,53 @@ void conf_value_insert(CONF_ARG *arg,CONF_VALUE *value,int len)
 		arg[hash]=arg[hash].next;*/
 	conf_hash_insert(&arg[hash],value);
 
+	return 1;
 	//arg[hash].value=value;
 }
 
+//复制哈希表
+void conf_hash_copy(CONF_ARG *new,int new_len,CONF_ARG *old,int old_len)
+{
+	int i;
+
+	for(i=0;i < old_len;++i)
+	{
+		if(old[i].len)
+			_conf_hash_copy(&old[i],new,new_len);
+	}
+}
+
+//动态更新哈希表
+int conf_hash_update(CONF *conf)
+{
+	CONF_ARG *new;
+	int len;
+
+	len=conf->size+conf->size*HASH_SP;
+	new=malloc(sizeof(CONF_ARG)*len);
+	if(new == NULL) return CONF_NO_MEM;
+	conf_hash_zero(new,len);
+	conf_hash_copy(new,len,conf->hash_data,conf->size);
+	conf->size=len;
+	free(conf->hash_data);
+	conf->hash_data=new;
+
+	return CONF_OK;
+}
+
+//置空哈希表
+void conf_hash_zero(CONF_ARG *arg,int len)
+{
+	int i;
+
+	for(i=0;i < len;++i)
+	{
+		arg[i].len=0;
+		arg[i].value=NULL;
+		arg[i].next=NULL;
+	}
+}
+
 /*BKDR 哈希算法*/
 unsigned int conf_hash_func1(const char *key)
 {
@@ -119,3 +179,35 @@ void conf_hash_insert(CONF_ARG *arg,CONF_VALUE *value)
 		arg->next=temp;
 	}
 }
+
+void _conf_hash_copy(CONF_ARG *arg,CONF_ARG *new,int len)
+{
+	while(arg != NULL)
+	{
+		conf_value_insert(new,arg->value,len);
+
+		arg=arg->next;
+	}
+}
+
+int conf_hash_in(CONF_ARG *arg,char *key,int len)
+{
+	CONF_VALUE *value;
+	int hash,hash2;
+
+	hash=hash2=conf_hash_func1(key)%len;
+	if(arg[hash].len == 0)
+	{
+		hash2=conf_hash_func2(key)%len;
+		if(arg[hash2].len == 0)
+			return 0;
+		else if(conf_hash_search(&arg[hash2],key,&value))
+			return 1;
+		else
+			return 0;
+	}
+	else if(conf_hash_search(&arg[hash],key,&value))
+		return 1;
+	else
+		return 0;
+}