diff --git a/lexical.go b/lexical.go
index 7208745..394aaf3 100644
--- a/lexical.go
+++ b/lexical.go
@@ -45,6 +45,7 @@ func parseLexical(jsonData string) ([]lexicalNode, error) {
 				Val:     currentChar,
 				IsToken: true,
 			})
+			tmpStr = ""
 		} else {
 			// 不是关键词, 继续向后走
 			tmpStr = tmpStr + currentChar