Stomach pain two days after kidney stone surgery is related to the abnormal condition of the operation area, which is caused by oozing from the operation area, local adhesion and gastrointestinal flatulence. 1. Oozing from the operation area: oozing will occur in the operation area after the surgery, which will cause irritation to the surrounding tissues and cause local pain and discomfort. 2. Localized adhesions: there will be some inflammatory reactions around the area after surgery, which may lead to adhesions around the area, further leading to abdominal distension and discomfort. 3. Gastrointestinal flatulence: In the early stage of postoperative recovery, the function of gastrointestinal tract has not been fully restored, which may lead to flatulence and further cause abdominal distension. If the pain is obvious and accompanied by abnormal urination and defecation, it is necessary to consult a doctor in time for observation, and carry out standardized treatment under the guidance of the clinician after diagnosis of the condition, so as to avoid delaying the condition.