diff --git a/delfin/drivers/dell_emc/power_store/consts.py b/delfin/drivers/dell_emc/power_store/consts.py
index e334dacab..bed49de5f 100644
--- a/delfin/drivers/dell_emc/power_store/consts.py
+++ b/delfin/drivers/dell_emc/power_store/consts.py
@@ -506,8 +506,7 @@ class DiskType(object):
     }
 }
 FS_TYPE_MAP = {
-    'Primary': constants.FSType.THIN,
-    'Snapshot': constants.FSType.THICK
+    'Primary': constants.FSType.THIN
 }
 FS_SECURITY_MODE_MAP = {
     'Native': constants.NASSecurityMode.NATIVE,
diff --git a/delfin/drivers/dell_emc/power_store/rest_handler.py b/delfin/drivers/dell_emc/power_store/rest_handler.py
index 8d0a0ff1b..b8f2ef733 100644
--- a/delfin/drivers/dell_emc/power_store/rest_handler.py
+++ b/delfin/drivers/dell_emc/power_store/rest_handler.py
@@ -1026,6 +1026,8 @@ def list_filesystems(self, storage_id):
         file_system_list = self.rest_call(self.REST_FILE_SYSTEM_URL)
         for file_system in file_system_list:
             fs_type = file_system.get('filesystem_type')
+            if 'Snapshot' == fs_type:
+                continue
             total_capacity = int(file_system.get('size_total'))
             used_capacity = int(file_system.get('size_used'))
             file_dict = {