diff --git a/include/chsrc.h b/include/chsrc.h
index bc7d1c0..1ed367a 100644
--- a/include/chsrc.h
+++ b/include/chsrc.h
@@ -7,7 +7,7 @@
  * Contributors  : Null Nil   <null@nil.com>
  *               |
  * Created on    : <2023-08-29>
- * Last modified : <2024-06-14>
+ * Last modified : <2024-06-21>
  *
  * chsrc 头文件
  * ------------------------------------------------------------*/
@@ -710,6 +710,37 @@ chsrc_backup (const char *path)
 }
 
 
+static char *
+chsrc_get_cpuarch ()
+{
+  char *ret;
+  bool exist;
+
+  if (xy_on_windows)
+    {
+      xy_unimplement;
+    }
+
+  exist = chsrc_check_program ("arch");
+  if (exist)
+    {
+      ret = xy_run ("arch", 0, NULL);
+      return ret;
+    }
+
+  exist = chsrc_check_program ("uname");
+  if (exist)
+    {
+      ret = xy_run ("uname -p", 0, NULL);
+      return ret;
+    }
+  else
+    {
+      chsrc_error ("无法检测到CPU类型");
+      exit (Exit_UserCause);
+    }
+}
+
 
 /* Target Info */
 typedef struct TargetInfo_t {
diff --git a/src/chsrc.c b/src/chsrc.c
index bedb5fa..3786e4f 100644
--- a/src/chsrc.c
+++ b/src/chsrc.c
@@ -14,7 +14,7 @@
  * chsrc: Change Source —— 全平台通用命令行换源工具
  * ------------------------------------------------------------*/
 
-#define Chsrc_Version      "v0.1.7.pre5-2024/06/21"
+#define Chsrc_Version      "v0.1.7.rc1-2024/06/21"
 #define Chsrc_Maintain_URL "https://gitee.com/RubyMetric/chsrc"
 
 #include "chsrc.h"
@@ -940,7 +940,7 @@ os_ubuntu_setsrc_for_deb822 (char *option)
 
   chsrc_backup (ETC_APT_DEB822_Ubuntu_Sources);
 
-  char *arch = xy_run ("arch", 0, NULL);
+  char *arch = chsrc_get_cpuarch ();
   char *cmd  = NULL;
   if (strncmp (arch, "x86_64", 6)==0)
     {
@@ -983,9 +983,9 @@ os_ubuntu_setsrc (char *option)
       chsrc_backup (ETC_APT_SOURCELIST);
     }
 
-  char *arch = xy_run ("arch", 0, NULL);
+  char *arch = chsrc_get_cpuarch ();
   char *cmd  = NULL;
-  if (strncmp (arch, "x86_64", 6)==0)
+  if (0==strncmp (arch, "x86_64", 6))
     {
       cmd = xy_strjoin (3, "sed -E -i \'s@https?://.*/ubuntu/?@", source.url, "@g\' " ETC_APT_SOURCELIST);
     }
@@ -1384,7 +1384,7 @@ os_arch_setsrc (char *option)
 
   bool  arch_flag = false;
   char *new_file  = NULL;
-  char *arch = xy_run ("arch", 0, NULL);
+  char *arch = chsrc_get_cpuarch ();
 
   if (strncmp(arch, "x86_64", 6)==0)
     {
@@ -1858,14 +1858,14 @@ os_netbsd_setsrc (char *option)
 
   chsrc_backup ("/usr/pkg/etc/pkgin/repositories.conf");
 
-  char *arch = xy_run("arch", 0, NULL);
+  char *arch = chsrc_get_cpuarch ();
   char *vercmd  = "cat /etc/os-release | grep \"VERSION=\" | grep -Po \"[8-9].[0-9]+\"";
   char *version = xy_run (vercmd, 0, NULL);
 
   char *url = xy_strjoin (5, source.url, arch, "/", version, "/All");
   chsrc_overwrite_file (url, "/usr/pkg/etc/pkgin/repositories.conf");
 
-  chsrc_say_lastly(&source, ChsrcTypeUntested);
+  chsrc_say_lastly (&source, ChsrcTypeUntested);
 }