diff --git a/src/recipe/os/APT/Debian.c b/src/recipe/os/APT/Debian.c
index 2d8572b..54ac132 100644
--- a/src/recipe/os/APT/Debian.c
+++ b/src/recipe/os/APT/Debian.c
@@ -47,13 +47,15 @@ os_debian_getsrc (char *option)
       return;
     }
 
-  if (chsrc_check_file (OS_Apt_SourceList))
+  if (chsrc_check_file (OS_Debian_old_SourceList))
     {
-      chsrc_view_file (OS_Apt_SourceList);
+      chsrc_view_file (OS_Debian_old_SourceList);
       return;
     }
 
-  chsrc_error2 ("缺少源配置文件！但仍可直接通过 chsrc set debian 来添加使用新的源");
+  char *msg = CliOpt_InEnglish ? "Source list file missing! However, you can still run `chsrc set debian` to add and use new sources"
+                               : "缺少源配置文件！但仍可直接通过 chsrc set debian 来添加使用新的源";
+  chsrc_error2 (msg);
   return;
 }
 
@@ -62,7 +64,7 @@ static bool
 os_debian_does_old_sourcelist_use_cdrom (void)
 {
   /* 我们只检查旧版sourcelist，因为 common.h 中的填充只支持旧版 */
-  char *cmd = xy_2strjoin ("grep -q '^deb cdrom:' ", OS_Apt_SourceList);
+  char *cmd = xy_2strjoin ("grep -q '^deb cdrom:' ", OS_Debian_old_SourceList);
   int ret = system (cmd);
   bool use_cdrom = ret == 0;
 
@@ -112,7 +114,7 @@ os_debian_setsrc (char *option)
   chsrc_note2 ("将基于旧格式(非DEB822)换源");
 
   /* Docker环境下，Debian镜像可能不存在该文件 */
-  bool sourcelist_exist = ensure_apt_sourcelist (OS_Is_Debian_Literally);
+  bool sourcelist_exist = ensure_debian_or_ubuntu_old_sourcelist (OS_Is_Debian_Literally);
 
   /**
    * 处理带有CDROM源的sourcelist
@@ -128,7 +130,7 @@ os_debian_setsrc (char *option)
           system ("rm " OS_Debian_old_SourceList);
           chsrc_warn2 ("旧版源配置文件中使用了 CDROM 源，已删除(但备份)该配置文件，重新配置");
           /* 现在的情况是：系统中已经没有配置文件了 */
-          sourcelist_exist = ensure_apt_sourcelist (OS_Is_Debian_Literally);
+          sourcelist_exist = ensure_debian_or_ubuntu_old_sourcelist (OS_Is_Debian_Literally);
         }
     }
 
diff --git a/src/recipe/os/APT/Ubuntu.c b/src/recipe/os/APT/Ubuntu.c
index 7937cd3..1aab63b 100644
--- a/src/recipe/os/APT/Ubuntu.c
+++ b/src/recipe/os/APT/Ubuntu.c
@@ -6,7 +6,7 @@
  * Contributors  :    Zhao    <1792582687@qq.com>
  *               |
  * Created On    : <2023-08-30>
- * Last Modified : <2024-12-18>
+ * Last Modified : <2025-03-25>
  * ------------------------------------------------------------*/
 
 static SourceProvider_t os_ubuntu_upstream =
@@ -46,13 +46,13 @@ os_ubuntu_getsrc (char *option)
       return;
     }
 
-  if (chsrc_check_file (OS_Apt_SourceList))
+  if (chsrc_check_file (OS_Ubuntu_old_SourceList))
     {
-      chsrc_view_file (OS_Apt_SourceList);
+      chsrc_view_file (OS_Ubuntu_old_SourceList);
       return;
     }
 
-  char *msg = CliOpt_InEnglish ? "Source config file missing! However, you can still run `chsrc set ubuntu` to add and use new sources"
+  char *msg = CliOpt_InEnglish ? "Source list file missing! However, you can still run `chsrc set ubuntu` to add and use new sources"
                                : "缺少源配置文件！但仍可直接通过 chsrc set ubuntu 来添加使用新的源";
   chsrc_error2 (msg);
   return;
@@ -98,31 +98,33 @@ os_ubuntu_setsrc (char *option)
   if (chsrc_check_file (OS_Ubuntu_SourceList_DEB822))
     {
       char *msg = CliOpt_InEnglish ? "Will change source based on new format"
-                                   : "将基于新格式换源";
+                                   : "将基于新格式(DEB822)换源";
       chsrc_note2 (msg);
       os_ubuntu_setsrc_for_deb822 (option);
       return;
     }
 
-  bool sourcelist_exist = ensure_apt_sourcelist (OS_Is_Ubuntu);
+  chsrc_note2 ("将基于旧格式(非DEB822)换源");
+
+  bool sourcelist_exist = ensure_debian_or_ubuntu_old_sourcelist (OS_Is_Ubuntu);
 
   chsrc_yield_source_and_confirm (os_ubuntu);
 
-  // 不存在的时候，用的是我们生成的无效文件，不要备份
+  /* 不存在的时候，用的是我们生成的无效文件，不要备份 */
   if (sourcelist_exist)
     {
-      chsrc_backup (OS_Apt_SourceList);
+      chsrc_backup (OS_Ubuntu_old_SourceList);
     }
 
-  char *arch = chsrc_get_cpuarch ();
+  char *arch = chsrc_get_cpuarch();
   char *cmd  = NULL;
   if (0==strncmp (arch, "x86_64", 6))
     {
-      cmd = xy_strjoin (3, "sed -E -i \'s@https?://.*/ubuntu/?@", source.url, "@g\' " OS_Apt_SourceList);
+      cmd = xy_strjoin (3, "sed -E -i \'s@https?://.*/ubuntu/?@", source.url, "@g\' " OS_Ubuntu_old_SourceList);
     }
   else
     {
-      cmd = xy_strjoin (3, "sed -E -i \'s@https?://.*/ubuntu-ports/?@", source.url, "-ports@g\' " OS_Apt_SourceList);
+      cmd = xy_strjoin (3, "sed -E -i \'s@https?://.*/ubuntu-ports/?@", source.url, "-ports@g\' " OS_Ubuntu_old_SourceList);
     }
 
   chsrc_run (cmd, RunOpt_Default);
diff --git a/src/recipe/os/APT/common.h b/src/recipe/os/APT/common.h
index 6836820..4a3d4d3 100644
--- a/src/recipe/os/APT/common.h
+++ b/src/recipe/os/APT/common.h
@@ -52,7 +52,7 @@
  * @return 文件是否存在
  */
 bool
-ensure_apt_sourcelist (int debian_type)
+ensure_debian_or_ubuntu_old_sourcelist (int debian_type)
 {
   bool exist = chsrc_check_file (OS_Apt_SourceList);