司马贞生平事迹及著述问题，为《史记》研究中一大疑案。通过考察，本文认为其生年在高宗仪凤间，武后后期为求学期，仕宦于中、睿、玄宗之世，历国子博士、弘文馆学士等职，官终润州别驾。（史记索隐）成书时间约为开元二十年左右，他也在书成后不久去世，年约五十余岁。 Sima Zhen’s life story and writing problems, as a “Historical Records” in the study of a large case. Through the investigation, this article thinks that his birthday is in Gaozong Yifeng, post-Wu period is for the semester, officialdom in, Rui, Xuan Zong’s world, Li Guozizhong, Hongwen bachelor and other staff, officials finally Runzhou do not drive. (史索索 隐) book time is about Kaiyuan twenty years or so, he also died shortly after the book, about fifty years old.