diff --git a/cocos/ui/UIRichText.cpp b/cocos/ui/UIRichText.cpp
index 886a42ad72..868bf7f806 100644
--- a/cocos/ui/UIRichText.cpp
+++ b/cocos/ui/UIRichText.cpp
@@ -283,6 +283,8 @@ void RichText::handleTextRenderer(const std::string& text, const std::string& fo
         std::string curText = text;
         size_t stringLength = StringUtils::getCharacterCountInUTF8String(text);
         int leftLength = stringLength * (1.0f - overstepPercent);
+        //The minimum cut length is 1, otherwise will cause the infinite loop.
+        if (0 == leftLength) leftLength = 1;
         std::string leftWords = Helper::getSubStringOfUTF8String(curText,0,leftLength);
         std::string cutWords = Helper::getSubStringOfUTF8String(curText, leftLength, stringLength - leftLength);
         if (leftLength > 0)