Diarrhea with bleeding can be caused by a variety of lesions, such as dysentery, intestinal polyps, internal hemorrhoids and other lesions. Common causes and related advice 1, bacterial dysentery: bacterial dysentery is an intestinal infection caused by dysentery bacillus, patients will have diarrhea and gastrointestinal bleeding, diarrhea with bleeding performance, serious cases can cause infectious shock. Treatment can be applied some antibacterial drugs, such as ofloxacin or safranin, and can also be applied Chinese herbal formulas such as Baitou Weng Tang or Paeoniae Tang, specific should consult a professional herbalist; 2, intestinal polyps: the intestinal mucosa surface protrudes into the intestinal cavity, there is abnormal growth of tissue; cause intestinal bleeding, which leads to blood on the surface of the stool, bright red, diarrhea with blood can occur when the intestinal peristalsis accelerates. It is recommended that patients actively go to the hospital and check the colonoscopy to clarify the specific lesion site, which can be treated by surgically removing the polyps; 3. Internal hemorrhoids: Patients can squeeze the hemorrhoids in the process of diarrhea to trigger bleeding, and then patients will see themselves with blood in the stool, in which case they can consider the treatment of internal hemorrhoids by surgery or ligation; 4. Ulcerative colitis: Ulcerative colitis patients often show diarrhea with mucus-purulent blood stools. Therefore, the symptoms of diarrhea and bleeding can occur. It can be treated with salazosulfapyridine and mesalamine; 5, Crohn’s disease: Crohn’s disease is a chronic non-specific inflammatory disease whose etiology is still unclear, and it can also appear diarrhea and blood in the stool. If the treatment is not effective, it is often necessary to apply glucocorticoids for treatment, such as budesonide to control the disease; 6, colorectal cancer: tumor patients with the development of the disease can gradually appear diarrhea and bloody stools, treatment is appropriate to follow medical advice, through the surgical removal of diseased tissue, if necessary, receive radiotherapy and chemotherapy. No matter which kind of lesion, patients should pay attention to the diet so as to reduce the occurrence of diarrhea and gastrointestinal lesions. The daily diet should be light, with less spicy and stimulating, greasy and unhygienic food, such as barbecue, fried skewers and hot pot.