diff --git a/tool/ssaudit b/tool/ssaudit
index 5a25c57..e6cced1 100755
--- a/tool/ssaudit
+++ b/tool/ssaudit
@@ -266,36 +266,43 @@ function install_in_ace_env() {
     echo "正在尝试使用 $ace_cmd 环境安装..."
     echo "----------------------------------------"
     
-    # 在ACE环境中执行安装
-    if $ace_cmd "ensure_aptss_exist && { dpkg -i '$deb_path' || aptss install '$deb_path' -yfq; }"; then
-        return 0
-    else
-        # 如果第一次安装失败，执行aptss update后再试一次
-        echo "第一次安装失败，正在更新仓库信息后重试..."
+    # 首先尝试dry-run测试
+    if ! $ace_cmd "ensure_aptss_exist && aptss install --dry-run '$deb_path'"; then
+        echo "初始dry-run测试失败，尝试更新后重试..."
         $ace_cmd "aptss update"
-        if $ace_cmd "dpkg -i '$deb_path' || aptss install '$deb_path' -yfq"; then
-            return 0
-        else
+        if ! $ace_cmd "aptss install --dry-run '$deb_path'"; then
+            echo "dry-run测试仍然失败，放弃安装"
             return 1
         fi
     fi
+    
+    # dry-run成功后执行实际安装
+    if $ace_cmd "dpkg -i '$deb_path' || aptss install '$deb_path' -yfq"; then
+        return 0
+    else
+        return 1
+    fi
 }
 
 # 在主机安装
 function install_in_host() {
     local deb_path="$1"
     
+    # 首先尝试dry-run测试
+    if ! aptss install --dry-run "$deb_path"; then
+        echo "初始dry-run测试失败，尝试更新后重试..."
+        aptss update
+        if ! aptss install --dry-run "$deb_path"; then
+            echo "dry-run测试仍然失败，放弃安装"
+            return 1
+        fi
+    fi
+    
+    # dry-run成功后执行实际安装
     if dpkg -i "$deb_path" || aptss install "$deb_path" -yfq; then
         return 0
     else
-        # 如果第一次安装失败，执行aptss update后再试一次
-        echo "第一次安装失败，正在更新仓库信息后重试..."
-        aptss update
-        if dpkg -i "$deb_path" || aptss install "$deb_path" -yfq; then
-            return 0
-        else
-            return 1
-        fi
+        return 1
     fi
 }
 
@@ -327,7 +334,6 @@ function auto_try_install() {
     
     return 1
 }
-
 # 清理安装后的文件
 function post_install_cleanup() {
     local success=$1
diff --git a/tool/ssinstall b/tool/ssinstall
index e9b53fa..3ec57c1 100755
--- a/tool/ssinstall
+++ b/tool/ssinstall
@@ -266,36 +266,43 @@ function install_in_ace_env() {
     echo "正在尝试使用 $ace_cmd 环境安装..."
     echo "----------------------------------------"
     
-    # 在ACE环境中执行安装
-    if $ace_cmd "ensure_aptss_exist && { dpkg -i '$deb_path' || aptss install '$deb_path' -yfq; }"; then
-        return 0
-    else
-        # 如果第一次安装失败，执行aptss update后再试一次
-        echo "第一次安装失败，正在更新仓库信息后重试..."
+    # 首先尝试dry-run测试
+    if ! $ace_cmd "ensure_aptss_exist && aptss install --dry-run '$deb_path'"; then
+        echo "初始dry-run测试失败，尝试更新后重试..."
         $ace_cmd "aptss update"
-        if $ace_cmd "dpkg -i '$deb_path' || aptss install '$deb_path' -yfq"; then
-            return 0
-        else
+        if ! $ace_cmd "aptss install --dry-run '$deb_path'"; then
+            echo "dry-run测试仍然失败，放弃安装"
             return 1
         fi
     fi
+    
+    # dry-run成功后执行实际安装
+    if $ace_cmd "dpkg -i '$deb_path' || aptss install '$deb_path' -yfq"; then
+        return 0
+    else
+        return 1
+    fi
 }
 
 # 在主机安装
 function install_in_host() {
     local deb_path="$1"
     
+    # 首先尝试dry-run测试
+    if ! aptss install --dry-run "$deb_path"; then
+        echo "初始dry-run测试失败，尝试更新后重试..."
+        aptss update
+        if ! aptss install --dry-run "$deb_path"; then
+            echo "dry-run测试仍然失败，放弃安装"
+            return 1
+        fi
+    fi
+    
+    # dry-run成功后执行实际安装
     if dpkg -i "$deb_path" || aptss install "$deb_path" -yfq; then
         return 0
     else
-        # 如果第一次安装失败，执行aptss update后再试一次
-        echo "第一次安装失败，正在更新仓库信息后重试..."
-        aptss update
-        if dpkg -i "$deb_path" || aptss install "$deb_path" -yfq; then
-            return 0
-        else
-            return 1
-        fi
+        return 1
     fi
 }
 
@@ -327,7 +334,6 @@ function auto_try_install() {
     
     return 1
 }
-
 # 清理安装后的文件
 function post_install_cleanup() {
     local success=$1