Xing性is an important topic of ancient Chinese philosophy.The discovery of unearthed documents has deepened our understanding of xing.Xing Zi Ming Chu性自命出is probably the Guodian manuscript that has generated the most interest among scholars.This article takes Xing Zi Ming Chu and Xunzi as investigations to explore the significance of xing in the Warring States Period in China.This article believes that the xing in Xing Zi Ming Chu only refers to natural properties,and it is not as specific as Mencius and Xunzi to indicate whether it is good or bad.The article will first review the background of Guodian manuscript,introduce the basic situation of Confucian documents in Guodian manuscripts.This article will also introduce the meaning of xing in Xing Zi Ming Chu and Xunzi,which is of great value for us to understand the meaning of xing in the Warring States Period.