When men have pain on the left side of the stomach, it is recommended to go to the hospital for relevant examinations to clarify the specific causes: first, ureteral stones, when there is left abdominal pain accompanied by frequent urination, urinary urgency, painful urination or hematuria, it is necessary to consider whether there are ureteral stones, which may also be accompanied by fever or lumbar pain and other symptoms, it is necessary to perform ultrasound of the urinary system and routine urine examination to clarify whether there are stones, if there are If there are stones, extracorporeal shock wave lithotripsy treatment is recommended. Secondly, intestinal spasm and intestinal obstruction may cause left-sided abdominal pain, the pain is often intermittent, and the location of the pain is not fixed, and may be accompanied by anal cessation of exhaustion, defecation or a feeling of urgency, etc. Abdominal X-ray examination and colonoscopy should be performed if necessary to clarify the possible causes.