diff --git a/release-assistant/tools/compare_pkgs_cvrf_release_branched.py b/release-assistant/tools/compare_pkgs_cvrf_release_branched.py
index b8243b28892299dd04e8ab0ec14b7ef74cc91a12..62b407a298c8a5b9727658aae599f13f1433c352 100644
--- a/release-assistant/tools/compare_pkgs_cvrf_release_branched.py
+++ b/release-assistant/tools/compare_pkgs_cvrf_release_branched.py
@@ -42,23 +42,30 @@ def resolve_xml(cvrf: str) -> dict:
     xml_result = {}
     ssl._create_default_https_context = ssl._create_unverified_context
     cvrf_url = "https://repo.openeuler.org/security/data/cvrf/{}".format(cvrf)
-    raw_xml = urlopen(cvrf_url)
-    tree = et.parse(raw_xml)
-    root = tree.getroot()
-
-    # resolve packages' version from cvrf files.
-    for branch in root[6]:
-        if branch.attrib["Name"] == "openEuler":
-            continue
-        for product in branch:
-            version_branch = product.attrib['CPE'].split(":", 3)[-1].replace(":", "-")
-            pkg_arch = product.text.rsplit(".", 2)[-2]
-            pkgs_of_branch = xml_result.get(version_branch, {})
-            temp_list = pkgs_of_branch.get(pkg_arch, [])
-            temp_list.append(product.text)
-            pkgs_of_branch[pkg_arch] = temp_list
-            xml_result[version_branch] = pkgs_of_branch
-    return xml_result
+    try:
+        raw_xml = urlopen(cvrf_url) 
+        tree = et.parse(raw_xml) 
+        root = tree.getroot()
+       # resolve packages' version from cvrf files.
+        for branch in root[6]:
+            if branch.attrib["Name"] == "openEuler":
+                continue
+            for product in branch:
+                version_branch = product.attrib['CPE'].split(":", 3)[-1].replace(":", "-")
+                pkg_arch = product.text.rsplit(".", 2)[-2]
+                pkgs_of_branch = xml_result.get(version_branch, {})
+                temp_list = pkgs_of_branch.get(pkg_arch, [])
+                temp_list.append(product.text)
+                pkgs_of_branch[pkg_arch] = temp_list
+                xml_result[version_branch] = pkgs_of_branch
+        return xml_result
+    except urllib.error.HTTPError as e:
+            LOGGER.info("Exception HTTPError %s" % e)
+            return None
+    except urllib.error.URLError as e:
+            LOGGER.info("Exception URLError %s" % e)
+            return ""
+
 
 
 def resolve_html(version_date: str) -> dict: