本文根据收集的明代象牙腰牌资料,对十二监中的御马监牙牌、尚衣监牙牌、直殿监牙牌、内官监牙牌,内侍牙牌及锦衣卫关防牙牌、文武官员牙牌等进行了记述,认为明代的牙牌作为一种证明身份及出入宫廷的通行证,以象牙制成,须随身悬带,以此作为“关防”凭证。并根据《明史》等史料,对明代牙牌的形制及编号、使用及佩带、种类及明代象牙的来源等相关问题进行了记述。 Based on the collected data of the ivory waist card in the Ming Dynasty, this paper describes the records of Yumaijian, Shangjijianjiao, Zhijianjianjiao, Zhijianjianjiao, Shiyaoguang and Jinyiweiguan, , That the Ming Dynasty’s tooth as a certificate of identity and access to the palace pass, made of ivory, to be carried with the belt, as a “off prevention” certificate. According to the history of Ming Dynasty and other historical materials, the author made a description of the related issues such as the shape and numbering, use and wearing of Mingpai, the origin of the Ming Dynasty ivory, and other related issues.