Descending colon adenoma is usually divided into benign tumor or malignant tumor, it is recommended that patients should first go to the hospital for abdominal CT, electronic colonoscopy and pathological examination, ultrasound examination, etc., to determine the nature of the tumor and then target treatment. 1. Benign tumors: If the tumor is benign in nature and the tumor volume is small, the patient can do colonoscopy and anoscopy resection surgery. If the tumor size is large, it is recommended to choose open surgery to remove the tumor, so as to achieve the effect of radical treatment. 2. Malignant tumor: if the tumor is malignant in nature, patients usually choose tumor resection surgery for treatment, and it is recommended that patients actively cooperate with doctors for staged chemotherapy and radiotherapy after surgery to avoid further spread of malignant cells, and go to the hospital to do rehabilitation examination regularly in the late stage to avoid recurrence and aggravation. It is recommended that patients maintain good dietary habits and work habits during the recovery process, and pay attention to keep warm and do not stay up late at night; if discomfort occurs, please consult the doctor in time to avoid delaying the condition.