Rectal cancer is a common malignant tumor caused by heredity, genetic mutation, and other factors. Rectal cancer is a common malignant tumor, mostly caused by heredity and gene mutation. After the disease, a lump may appear in the anus, which is not easy to move. At the same time, it may be accompanied by blood in stool, pus blood in stool, urgency and heaviness (discomfort in the lower abdomen, wanting to defecate very much, and a feeling of incomplete defecation after defecation), thinning of stool; as well as unexplained weight loss, anemia, fatigue and other systemic manifestations. Internal hemorrhoids is one of the hemorrhoids, mostly caused by bad dietary habits and bad defecation habits. After the disease, meatballs may appear in the anus, accompanied by fresh blood during or after defecation, perianal itching, defecation difficulties and other symptoms. Patients with the above conditions may have other causes, and should go to the hospital in time for standardized examination and diagnosis, early identification of the cause of the disease, accurate treatment, to avoid delaying the condition.