Bleeding bright red in the stool may be due to hemorrhoids, anal fissures, rectal tumors, etc. Stool bleeding bright red, can only show that the bleeding site in the rectum or sigmoid colon, from the anus is relatively close, can not indicate the severity of the disease. 1. hemorrhoids: this bleeding clinical symptoms often manifested in constipation when straining to defecate. Hemorrhoids is not a very serious disease, through lifestyle changes and with medication can be cured, bleeding, or hemorrhoids embedded, can be treated surgically. 2. anal fissure: fecal friction during defecation can lead to anal fissure or ulcer surface bleeding, blood color bright red. Generally, it is manifested as blood on the stool paper, occasionally there is dripping blood, accompanied by perianal pain, this situation is not serious, and it can be cured by anal fissure resection. 3. Rectal tumor: after the malignant tumor of rectum grows to a certain degree, the mucous membrane on the surface of the tumor is prone to erosion and necrosis, thus causing bleeding phenomenon, which is manifested as bright red pus and blood on the stool. This situation is more serious, need to follow the doctor’s advice to be timely surgical resection, radiotherapy, chemotherapy (such as 5-FU, mitomycin, etc.) and other treatments. When the patient appears in the stool bleeding bright red, there may be chronic bacillary dysentery, rectal polyps and other diseases, often not serious, but should be promptly to the hospital, a clear diagnosis and timely compliance with the doctor’s instructions for treatment.