diff --git a/Common/log_types.h b/Common/log_types.h
index d3d0d7b98..276ddb91b 100755
--- a/Common/log_types.h
+++ b/Common/log_types.h
@@ -8,6 +8,8 @@
 
 #define MAX_LINE_SZ     1024
 #define MAX_PATH_SZ     MAX_LINE_SZ
+#define MAX_U64_SZ      21
+
 
 
 typedef enum {
@@ -49,7 +51,7 @@ typedef struct _log_file {
     char                path[MAX_PATH_SZ];
     log_compress_t      is_compress;
     u32                 del_over_days;
-    u64                 del_over_size;    
+    char                del_over_size[MAX_U64_SZ];    
 } log_file_t;
 
 
diff --git a/Platform/user/configm/config-server/log_config/log_config_file.c b/Platform/user/configm/config-server/log_config/log_config_file.c
index 24211c99f..6b30b5652 100755
--- a/Platform/user/configm/config-server/log_config/log_config_file.c
+++ b/Platform/user/configm/config-server/log_config/log_config_file.c
@@ -6,7 +6,7 @@
     S2J_STRUCT_GET_STRING_ELEMENT_N(s, o, path, MAX_PATH_SZ);                 \
     s2j_struct_get_basic_element(s, o, int, is_compress);                     \
     s2j_struct_get_basic_element(s, o, int, del_over_days);                   \
-    s2j_struct_get_basic_element(s, o, int, del_over_size);                   \
+    S2J_STRUCT_GET_STRING_ELEMENT_N(s, o, del_over_size, MAX_U64_SZ);         \
 }
 
 ret_code log_file_config_chk(uint source, uint *config_type,
diff --git a/Platform/user/logging/cmd_file.c b/Platform/user/logging/cmd_file.c
index fefae2aba..cfbdc1c34 100755
--- a/Platform/user/logging/cmd_file.c
+++ b/Platform/user/logging/cmd_file.c
@@ -38,22 +38,19 @@ int conf_file(cJSON *json_obj, int argc, char **argv)
             return -1;
         }
     }
-
-    if (argc >= 7) {
-        int64_t size = atoll(argv[6]);
-        if (size > 0) {
-            log_file.del_over_size = (u64)size; 
-        } else if (size < 0) {
-            ULOG_WARNING(g_log, "Deleting size(%d) mustn't be less than 0", size);
+    
+    if (argc >= 7) {      
+        if (snprintf(log_file.del_over_size, sizeof(log_file.del_over_size),  "%s", argv[6]) < 0) {
+            ULOG_ERR(g_log, "Building del max size:%s is filure", argv[6]);
             return -1;
-        }
+        }       
     }
 
     s2j_json_set_basic_element(json_obj, &log_file, int, level);  
     s2j_json_set_basic_element(json_obj, &log_file, string, path);  
     s2j_json_set_basic_element(json_obj, &log_file, int, is_compress);  
     s2j_json_set_basic_element(json_obj, &log_file, int, del_over_days);  
-    s2j_json_set_basic_element(json_obj, &log_file, int, del_over_size); 
+    s2j_json_set_basic_element(json_obj, &log_file, string, del_over_size); 
 
     int ret = set_log_conf(json_obj, LOG_CONFIG_FILE);                                         
     if (ret != 0) {                                                                    
diff --git a/Platform/user/ulog/log-sched/log_file.c b/Platform/user/ulog/log-sched/log_file.c
index a53ac6d64..b73f231b4 100755
--- a/Platform/user/ulog/log-sched/log_file.c
+++ b/Platform/user/ulog/log-sched/log_file.c
@@ -124,7 +124,9 @@ static int conf_log_file(const log_file_t *conf)
        
 	/* 将日志文件大小上限写入本程序配置文件中 */
 	memset(value_str, 0, sizeof(value_str));
-	sprintf(value_str, "%llu", conf->del_over_size);
+    if (strlen(conf->del_over_size) > 0) {
+	    sprintf(value_str, "%s", conf->del_over_size);
+    }
 	if (write_log_file_conf(LOG_CONF_KEY_FILE_MAX_SIZE_STR, value_str) != 0) {
 		ULOG_ERR(g_log, "Del-over-size which is written is failure");
 		return -1;
@@ -145,21 +147,6 @@ static int __rpc_conf_log_file(pointer input, const void *arg, char *str_err, in
 
 void rpc_conf_log_file(rpc_conn *conn, pointer input, int input_len,	pointer data)
 {
-    u32 need_len = sizeof(log_file_t);
-    if (input_len < need_len) {
-        ULOG_WARNING(g_log, 
-               "The input paramter of rpc log file is needed length of %u, but the actual length is %u",
-               need_len, input_len);
-        return;
-    }
-
-    if (conf_log_file((const log_file_t *)input) != 0) {
-        ULOG_ERR(g_log, "Configuring file of log is faiure");
-        rpc_return_error(conn, RET_ERR, "Configuring file of log is faiure");
-        return;
-    }
-    rpc_return_null(conn);
-
     rpc_conf_proc(conn, input, input_len, sizeof(log_file_t), __rpc_conf_log_file, NULL);
 }