The article points out the definition and scope of Ming dynasty colloquial words in XunMengZiHui(Hereinafter referred to as ZiHui). The distribution of the colloquial words in ZiHui was throughly investigated and four major characteristics of the colloquial words are summerized. we think colloquial words in ZiHui can broaden the research field of modern Chinese vocabulary. It has great research value to the study of Chinese vocabulary periodic history and grand language reference book compilation.