目的　研究中国人恒牙根管的解剖形态 ,为牙髓治疗提供依据。方法　用透明标本法将 3 80 3个恒牙依次作髓腔染色 ,5 %盐酸脱矿 ,酒精系列脱水 ,最后置入冬青油中完成透明。结果　根管被分为 9型 ,观察并统计了各型根管在不同牙位、牙根中的发生率。结论　中国人恒牙根管的解剖形态在不同牙位、同一牙位的不同牙根中具有一定的规律性 Objective To study the anatomic morphology of root canal in Chinese permanent teeth and provide basis for dental pulp therapy. Methods 3 803 permanent teeth were sequentially dyed in the medullary cavity, 5% hydrochloric acid was demineralized, and the alcohol series was dehydrated. Finally, it was put into the oil of wintergreen to complete the transparence. Results The root canal was divided into 9 types. The incidence of various types of root canal in different teeth and root was observed and counted. Conclusions The anatomy of the root canal of Chinese permanent teeth has certain regularity in different tooth positions, different tooth roots of the same tooth position