Pain inside the small abdomen when sitting up is seen in the following cases: First, cystitis, more frequent urination, urinary urgency, urinary pain, meatus hematuria and other symptoms of urinary tract infection irritation, some are also accompanied by fever, antibiotics such as levofloxacin, cefaclor extended-release tablets anti-inflammatory treatment can be. Second, gynecological inflammation can appear pain in the small abdomen, the pain increases when sitting up, tinidazole, metronidazole treatment. Third, appendicitis, there can be pain in the right lower abdomen, accompanied by chills, fever, when the involvement of peritonitis can appear when the abdomen activity pain increased, tinidazole, cephalosporin antibiotics or levofloxacin anti-inflammatory or surgical treatment can be.