diff --git a/app/src/sample_data_manager.c b/app/src/sample_data_manager.c
index d32734d..de86947 100644
--- a/app/src/sample_data_manager.c
+++ b/app/src/sample_data_manager.c
@@ -5,7 +5,7 @@
 #include "zeeprom_fs.h"
 #include "znordic.h"
 
-static sample_data_fileinfo_t fileinfocache[MAX_FILE_NUM];
+static sample_data_fileinfo_t fileinfocache[MAX_FILE_NUM * 2];
 static uint8_t                fileinfocache_count = 0;
 
 void sample_data_mgr_init() { zeeprom_fs_init(); }
@@ -14,6 +14,7 @@ void sample_data_mgr_uninit() { zeeprom_fs_uinit(); }
 sample_data_fileinfo_list_t* sample_data_mgr_get_fileinfo_list() {  //
   static sample_data_fileinfo_list_t fileinfo_list;
   memset(&fileinfo_list, 0, sizeof(fileinfo_list));
+  fileinfocache_count = 0;
 
   // 读取所有记录信息
   zeeprom_header_t* header = zeeprom_fs_get_header();
@@ -22,13 +23,19 @@ sample_data_fileinfo_list_t* sample_data_mgr_get_fileinfo_list() {  //
     zeeprom_sector_info_t* sectorinfo = &header->sectorinfos[i];
     if (sectorinfo->usage == 1 && sectorinfo->sector_index_in_file == 0) {
       // 读取文件信息
-      sample_data_fileinfo_t* fileinfo = &fileinfocache[i];
+      if (fileinfocache_count >= ZARRAY_SIZE(fileinfocache)) {
+        ZLOGE("fileinfocache_count >= MAX_FILE_NUM");
+        break;
+      }
+
+      sample_data_fileinfo_t* fileinfo = &fileinfocache[fileinfocache_count];
       fileinfo->fileuuid               = sectorinfo->fileuuid;
       memcpy(fileinfo->filename, sectorinfo->filename, sizeof(fileinfo->filename));
       fileinfo->size = zeeprom_fs_get_filesize_by_fileuuid(fileinfo->fileuuid);
 
       fileinfo_list.fileinfo[fileinfo_list.count] = fileinfo;
       fileinfo_list.count++;
+      fileinfocache_count++;
     }
   }
   // 根据文件uuid排序，uuid最大的排在最前面
@@ -44,7 +51,7 @@ sample_data_fileinfo_list_t* sample_data_mgr_get_fileinfo_list() {  //
   return &fileinfo_list;
 }
 
-bool sample_data_mgr_storage_is_full() { return zeeprom_fs_get_file_num() >= MAX_FILE_NUM; }
+bool    sample_data_mgr_storage_is_full() { return zeeprom_fs_get_file_num() >= MAX_FILE_NUM; }
 int32_t sample_data_mgr_get_file_num() { return zeeprom_fs_get_file_num(); }
 
 #if 1