diff --git a/oma-pm-operation-type/src/lib.rs b/oma-pm-operation-type/src/lib.rs
index 1ae13113f..6efbf96ac 100644
--- a/oma-pm-operation-type/src/lib.rs
+++ b/oma-pm-operation-type/src/lib.rs
@@ -14,6 +14,7 @@ pub struct OmaOperation {
     pub total_download_size: u64,
     pub suggest: Vec<(String, String)>,
     pub recommend: Vec<(String, String)>,
+    pub max_old_installed_size: u64,
 }
 
 impl Display for OmaOperation {
diff --git a/oma-pm/src/apt.rs b/oma-pm/src/apt.rs
index 84b458bed..3fd93257b 100644
--- a/oma-pm/src/apt.rs
+++ b/oma-pm/src/apt.rs
@@ -846,6 +846,8 @@ impl OmaApt {
         let mut suggest = HashSet::with_hasher(ahash::RandomState::new());
         let mut recommend = HashSet::with_hasher(ahash::RandomState::new());
 
+        let mut max_old_installed_size = 0;
+
         for pkg in changes {
             if pkg.marked_new_install() {
                 let cand = pkg
@@ -886,6 +888,8 @@ impl OmaApt {
             }
 
             if pkg.marked_upgrade() {
+                swap_max_old_instaalled_size(&mut max_old_installed_size, &pkg);
+
                 let install_entry = pkg_delta(
                     &pkg,
                     InstallOperation::Upgrade,
@@ -952,6 +956,8 @@ impl OmaApt {
             }
 
             if pkg.marked_reinstall() {
+                swap_max_old_instaalled_size(&mut max_old_installed_size, &pkg);
+
                 // 如果一个包被标记为重装，则肯定已经安装
                 // 所以请求已安装版本应该直接 unwrap
                 let version = pkg.installed().unwrap();
@@ -986,6 +992,8 @@ impl OmaApt {
             }
 
             if pkg.marked_downgrade() {
+                swap_max_old_instaalled_size(&mut max_old_installed_size, &pkg);
+
                 let install_entry = pkg_delta(
                     &pkg,
                     InstallOperation::Downgrade,
@@ -1058,6 +1066,7 @@ impl OmaApt {
             autoremovable,
             suggest: suggest.into_iter().collect(),
             recommend: recommend.into_iter().collect(),
+            max_old_installed_size,
         })
     }
 
@@ -1065,7 +1074,9 @@ impl OmaApt {
     pub fn check_disk_size(&self, op: &OmaOperation) -> OmaAptResult<()> {
         let download_size = op.total_download_size as i64;
 
-        let need_space = download_size + op.disk_size_delta;
+        // dpkg 需要先解压新版本的文件，在删除老版本的文件
+        // 所以要加上被卸载掉的包的 最大的包的安装大小
+        let need_space = download_size + op.disk_size_delta + op.max_old_installed_size as i64;
 
         let available_disk_size =
             fs4::available_space(self.config.get("Dir").unwrap_or("/".to_string()))
@@ -1110,6 +1121,14 @@ impl OmaApt {
     }
 }
 
+fn swap_max_old_instaalled_size(max_old_installed_size: &mut u64, pkg: &Package<'_>) {
+    let installed_size = pkg.installed().unwrap().installed_size();
+
+    if installed_size > *max_old_installed_size {
+        *max_old_installed_size = installed_size;
+    }
+}
+
 fn dpkg_exit_status(mut cmd: std::process::Child) -> Result<(), OmaAptError> {
     match cmd.wait() {
         Ok(status) => match status.code() {