diff --git a/src/usr/bin/packdeb b/src/usr/bin/packdeb
index e47343c..426d07e 100755
--- a/src/usr/bin/packdeb
+++ b/src/usr/bin/packdeb
@@ -37,6 +37,24 @@ if [ $non_755_files -gt 0 ]; then
 else
     echo "所有文件权限已经是755，无需修改"
 fi
+# 新增Installed-Size处理逻辑
+installed_size=$(du -sk "$opt" | awk '{print $1}')
+control_file="$opt/DEBIAN/control"
+if [ -f "$control_file" ]; then
+    if grep -q "Installed-Size:" "$control_file"; then
+        sed -i "s/Installed-Size:.*/Installed-Size: $installed_size/" "$control_file"
+    else
+        # 判断文件行数是否大于等于3
+        if [ $(wc -l < "$control_file") -ge 3 ]; then
+            sed -i "3iInstalled-Size: $installed_size" "$control_file"
+        else
+            sed -i "1iInstalled-Size: $installed_size" "$control_file"
+        fi
+    fi
+    echo "已更新Installed-Size: ${installed_size}KB"
+else
+    echo "警告: 未找到DEBIAN/control文件"
+fi
 
 fakeroot dpkg-deb -Z xz  -b $opt $opt/..
 notify-send `basename $opt`打包完成 -i /usr/share/icons/uos-packaging-tools.png