The recurrence rate of stage II rectal cancer is usually around 30%. Stage II rectal cancer is the clinical stage of rectal cancer tumor, which means that the tumor only invades the muscle layer or the whole layer of the intestinal wall, with local lymph node metastasis and no distant organ metastasis. Lymph node metastasis, peripheral blood vessel invasion, etc. of the tumor will affect the recurrence rate of the tumor. Clinical data statistics show that the recurrence rate of stage II rectal cancer is generally around 30%. In order to reduce the recurrence rate of rectal cancer, early diagnosis and early treatment should be achieved. Early surgical treatment, followed by radiotherapy, chemotherapy and other therapeutic means appropriately adopted according to the pathological type, can enhance the postoperative therapeutic effect of rectal cancer patients and reduce the recurrence rate.