一个成功的根管治疗包括正确的诊断、充分的根管预备和完善的根管充填,而这些步骤成功的基础是对根管形态的充分掌握。变异根管的错误诊断和治疗以及根管遗漏是造成根管治疗失败的主要原因。本文对根管解剖形态、根管数目的确定方法、临床常见的变异根管形态及根管形态研究方法的发展进行简要介绍。 A successful root canal treatment includes proper diagnosis, adequate root canal preparation, and complete root canal filling, and the success of these procedures is based on a thorough understanding of root canal morphology. Mutation root canal misdiagnosis and treatment and root canal omission is the main reason for the failure of root canal therapy. This article describes the anatomy of root canal, the method of determining the number of root canal, the morphology of common variant root canal and the development of research methods of root canal morphology.