Ling, Ming-Chu had mentioned in his collection of short stories “strike table in joy, surprise, anger”: “I was heard sword-play from Tang dynasty and vanishes in Song. That is why we have never heard anything about knight-errant since Yuan, I wonder where you can learn this?” After investigating knight-errant stories in classical novels and drama, it was found the situation just matched what he said. A large amount of literary works on knight-errant appeared in Tang poems and novels. Among them, female swordsmen appeared in some short stories are specialized by their demeanor and direct, simple character. This special style was followed in Song dynasty, but suddenly stopped in Yuan and appeared again in Ming’s novels and drama. From the changes, we found a strong-to-weak trend on female knight-errant literal works. However, this trend may reflect some facts. Female knight-errant like Hong-Shien and Nie, Yin-Nian in Tang’s short stories were characterized by their not overstuffed, light and free appearance. This characteristic became an un-exceedable model for other literary works in the following dynasties. Why did female knight-errant can demonstrate their active and outstanding character in Tang’s literary works and why not in Yuan’s Is it because of the difference of literal style or the changing of time-space background? This research tries to investigate to find some clues and track the changes.