Colorectal cancer is a malignant tumor originating from the epithelium of the colorectal mucosa. It is often formed by benign adenomatous polyps through multiple gene mutations. Diet, heredity, and diseases such as ulcerative colitis and colorectal adenomatous polyps are risk factors. Symptoms include bloody stools, mucus pus and bloody stools, changes in stool shape or habit, abdominal pain, abdominal mass, etc. In addition to local symptoms, it may be transferred to other organs through blood or lymph, resulting in systemic symptoms. Preliminary screening can be performed by fecal occult blood examination, and the gold standard for establishing the diagnosis is histopathological examination of biopsy. In the treatment of colorectal cancer, TCM can not only directly treat the tumor, but also improve the sequelae symptoms and improve the quality of life for patients who have undergone surgery, radiotherapy and chemotherapy and have surgical complications or radiation enteritis.