diff --git a/src/xdevice/_core/driver/parser_lite.py b/src/xdevice/_core/driver/parser_lite.py
index 566b7dd56846b903d01901c2387f21b10e1ab2de..db5c52f8caa989fc683f49ee9172bfa1e3608c5b 100755
--- a/src/xdevice/_core/driver/parser_lite.py
+++ b/src/xdevice/_core/driver/parser_lite.py
@@ -622,7 +622,8 @@ class CTestParser(IParser):
             except AttributeError:
                 LOG.error("parsing log: %s failed" % (line.strip()),
                           error_no="00405")
-            self.last_line = line
+            if line and line.strip():
+                self.last_line = line
 
     def _parse_product_info(self, line):
         if _PRODUCT_PARA_START in line: