Abstract: Objective   To explore the diagnosis and treatment of synchronous colorectal carcinoma(SCC).  Methods   The clinical data of 6 cases of SCC treated with surgery in our hospital from March 2021 to July 2021 were retrospectively analyzed.  Results   All 6 patients with SCC underwent one-stage surgical resection and anastomosis successfully.The patients recovered smoothly without serious complications such as anastomotic leakage.  Conclusion   The treatment effect is satisfactory for patients with SCC by choosing the appropriate surgical method according to the tumor location.

Key words: colorectal tumor, synchronous multiple primary；surgical treatment