diff --git a/script/tools/chroot.sh b/script/tools/chroot.sh
index 85ae66926019cd9f57247be08034047652ebd123..5653cb518827dbb528518b81b153cf34610d72bc 100644
--- a/script/tools/chroot.sh
+++ b/script/tools/chroot.sh
@@ -14,7 +14,7 @@ function chroot_addbep()
 function chroot_init()
 {
     chroot_clean
-    pkglist="pigz expect wget bash vim grep patch tar gzip bzip2 openssh-clients yum perl createrepo_c dnf-utils git kpartx xz"
+    pkglist="pigz expect wget bash vim grep patch tar gzip bzip2 openssh-clients yum perl createrepo_c dnf-utils git kpartx xz libffi expat ca-certificates"
     if [[ ${ARCH} == "ppc64le" ]];then
         pkglist="${pkglist} grub2-tools grub2-ppc64le-modules"
     fi
@@ -72,25 +72,94 @@ DEVLIST
 
 function chroot_clean()
 {
-    pwd 
+    pwd
     ls /
     set +e
     rpm -e openEuler_chroot
     if [ -d "${OPENEULER_CHROOT_PATH}" ]; then
-        lsof | grep openeuler
-        for openeuler_pid in $(lsof | grep '/usr1/openeuler/' | awk '{print $2}')
-        do
-            kill -9 "${openeuler_pid}"
+        log_info "Starting comprehensive cleanup of ${OPENEULER_CHROOT_PATH}..."
+        
+        log_info "Killing processes using ${OPENEULER_CHROOT_PATH}..."
+        
+        local pids=$(lsof +D "${OPENEULER_CHROOT_PATH}" 2>/dev/null | awk 'NR>1 {print $2}' | sort -u)
+        if [ -n "$pids" ]; then
+            log_info "Found PIDs using the directory: $pids"
+            kill -9 $pids 2>/dev/null
+            sleep 2
+        fi
+        
+        log_info "Unmounting all mount points under ${OPENEULER_CHROOT_PATH}..."
+        
+        mount | grep "${OPENEULER_CHROOT_PATH}" | awk '{print $3}' | \
+            awk -F'/' '{print NF-1 " " $0}' | sort -nr | cut -d' ' -f2 | \
+            while read mount_point; do
+                log_info "Unmounting: $mount_point"
+                umount -f "$mount_point" 2>/dev/null || umount -l "$mount_point" 2>/dev/null
+            done
+        
+        for point in proc sys dev/pts dev run tmp; do
+            if mountpoint -q "${OPENEULER_CHROOT_PATH}/${point}" 2>/dev/null; then
+                log_info "Unmounting standard mount point: ${point}"
+                umount -f "${OPENEULER_CHROOT_PATH}/${point}" 2>/dev/null
+            fi
         done
-        umount "${OPENEULER_CHROOT_PATH}/proc"
-        umount "${OPENEULER_CHROOT_PATH}/sys"
-        umount "${OPENEULER_CHROOT_PATH}/dev/pts"
-        umount "${OPENEULER_CHROOT_PATH}/dev"
-        rm -rf "${OPENEULER_CHROOT_PATH}"
-    fi
-    if [ -d "${OPENEULER_CHROOT_PATH}" ]; then
-        log_error "delete ${OPENEULER_CHROOT_PATH} failed"
+        
+        log_info "Cleaning up loop devices..."
+        losetup -a | grep -i "${OPENEULER_CHROOT_PATH}" | while read line; do
+            local loop_dev=$(echo "$line" | cut -d: -f1)
+            log_info "Removing loop device: $loop_dev"
+            umount -f "$loop_dev" 2>/dev/null
+            losetup -d "$loop_dev" 2>/dev/null
+        done
+        
+        log_info "Using fuser to kill remaining processes..."
+        fuser -k -9 "${OPENEULER_CHROOT_PATH}" 2>/dev/null || true
+        
+        # 等待资源释放
+        sleep 3
+        
+        pids=$(lsof +D "${OPENEULER_CHROOT_PATH}" 2>/dev/null | awk 'NR>1 {print $2}' | sort -u)
+        if [ -n "$pids" ]; then
+            log_info "Killing remaining PIDs: $pids"
+            kill -9 $pids 2>/dev/null
+            sleep 2
+        fi
+        
+        log_info "Attempting to remove directory..."
+        local retry_count=0
+        local max_retries=3
+        
+        while [ $retry_count -lt $max_retries ]; do
+            rm -rf "${OPENEULER_CHROOT_PATH}" 2>/dev/null && break
+            
+            retry_count=$((retry_count + 1))
+            log_info "Retry $retry_count failed, waiting before next attempt..."
+            sleep 2
+            
+            mount | grep "${OPENEULER_CHROOT_PATH}" | awk '{print $3}' | \
+                while read mount_point; do
+                    umount -l "$mount_point" 2>/dev/null || true
+                done
+        done
+        
+        # 最终检查
+        if [ -d "${OPENEULER_CHROOT_PATH}" ]; then
+            log_info "WARNING: Directory still exists after cleanup attempts:"
+            ls -la "${OPENEULER_CHROOT_PATH}" 2>/dev/null || log_info "Cannot list directory"
+            
+            # 显示占用信息以便调试
+            log_info "Current usage:"
+            lsof +D "${OPENEULER_CHROOT_PATH}" 2>/dev/null || log_info "No processes using directory"
+            mount | grep "${OPENEULER_CHROOT_PATH}" 2>/dev/null || log_info "No mount points found"
+            
+            return 1
+        else
+            log_info "Successfully cleaned up ${OPENEULER_CHROOT_PATH}"
+        fi
+    else
+        log_info "Directory ${OPENEULER_CHROOT_PATH} does not exist, nothing to clean"
     fi
+    
     set -e
 }