Usually, most of the rectal adenocarcinoma stage 1 can be cured. Rectal adenocarcinoma is a type of rectal cancer and is a malignant tumor. In medicine, it is divided into four stages. Stage I refers to the cancer is confined to the mucous membrane layer and submucous membrane layer, without invading the muscle layer or lymphocyte metastasis. After active treatment, most of them can be cured after surgical resection and have better prognosis. The treatment principle of rectal adenocarcinoma is early detection, early diagnosis and early treatment. Surgical resection of cancer is the main treatment method for rectal adenocarcinoma, and at the same time with chemotherapy, radiotherapy and other comprehensive treatments, the therapeutic effect can be improved to a certain extent. After surgery, patients should pay attention to prevention of infection, regular follow-up and review, and actively cooperate with the treatment, so as to improve the therapeutic effect.