Norfloxacin has a certain therapeutic effect on general colitis, such as abdominal pain and diarrhea after the patient has eaten unclean food, and the patient’s stool frequency is significantly increased, watery stool, yellow, egg-like stool, which is usually considered to be caused by inflammatory infections. Patients abdominal pain, diarrhea and other symptoms. But it is not recommended to take for a long time, because long-term use may lead to bacterial disorders inside the intestinal cavity of patients, which can easily lead to some lesions. If the ulcerative colitis is also known as inflammatory bowel disease, not caused by bacterial infection, oral norfloxacin capsule is not effective, when necessary to the hospital to perform colonoscopy, can also take tissue out for pathological examination. If the diagnosis is clear is caused by ulcerative colitis, generally need to take oral mesalazine, or mesalazine suppository anal to carry out treatment.