Patients with pressure pain in the right lower abdomen are clinically common for the following reasons: a. Acute appendicitis is the most common acute abdominal condition clinically, often manifesting as pressure pain in the right lower abdomen. Once accompanied by septic infection of the appendix, the patient may develop right lower abdominal muscle tension with rebound pain. The nature of the local lesion can be clarified by ultrasound examination of the appendix. Patients need to undergo surgical removal of the appendix so that serious complications can be avoided. Second, female patients with pus accumulation in the right fallopian tube will also have pain on pressure in the right small abdomen, often combined with chills, high fever and other symptoms of systemic toxicity. Through gynecological ultrasound and pelvic CT examination, the nature of the lesion can be clarified, and surgery is needed in time. Third, the right ureteral stone with fluid accumulation, the patient may also have pain on pressure in the right lower abdomen. The specific location of the ureteral stone can be clarified by urological CT and ultrasound examination. Extracorporeal impact lithotripsy can be performed as soon as possible to smoothly discharge the stone out of the body along with urine, thus improving the pain symptoms.