The causes of lower abdominal distension are commonly found in ulcerative colitis, acute and chronic colitis, rectal tumors, etc., and women can also be gynecological inflammation. 1. Ulcerative colitis: some patients because of environmental factors and immune dysfunction, resulting in colonic mucosa, rectal mucosa and other parts of the ulcerative lesions, manifested in the lower part of the abdomen, soreness and swelling, and at the same time there is mucous pus and blood stools and other manifestations, it is recommended that the patient in the guidance of the doctor to take oral mesalazine drug treatment. 2. Acute and chronic colitis: many patients due to poor dietary habits or abdominal cold leading to inflammatory lesions of the intestinal mucosa, manifested in the lower part of the abdomen, abdominal pain, diarrhea and other manifestations, it is recommended that the patient through the routine examination of the stool, once the results of the test results found that there are bacterial infections, you can be guided by the doctor to take oral treatment of levofloxacin anti-infection. 4. Rectal tumor: when patients have tumor cells invading the rectal mucosa, ulcerative changes may occur, manifested as abdominal pain and distension, as well as poor defecation, bleeding and other manifestations, it is recommended that patients diagnosed with the disease, and then follow the doctor’s instructions to control the condition through radiotherapy, surgery and other treatments. Gynecological inflammation: such as pelvic inflammatory disease, adnexitis, adnexal cysts, etc., may lead to discomfort in the lower abdomen, it is recommended that the patient through the leukorrhea 4. routine examination, ultrasound examination, etc., after diagnosis of the disease, you can comply with the doctor’s instructions for the treatment of infections, such as oral adamantium capsules, gynecological thousand gold tablets, etc.. There are many reasons that lead to the lower part of the abdomen soreness, you need to go to the hospital as soon as possible to check, after clarifying the cause of the disease, under the guidance of the doctor as soon as possible treatment, do not delay delay delay.