Male abdominal distension may be caused by factors such as prostatitis, ureteral stones, varicocele, and acute abdominal disorders. 1. Prostatitis: it may be associated with poor hygiene, prolonged alcohol consumption, prolonged holding of urine and other factors, in the acute attack will lead to abdominal distension and pain, may also be accompanied by frequent urination, urinary diversion, urinary dribbling and other symptoms. 2. Ureteral stones: usually secondary to kidney stones, when the stone is stuck at the end of the ureter, it causes irritation to the ureteral wall, which may cause abdominal distension and pain, accompanied by severe lumbar and abdominal pain, hematuria, urinary frequency and other symptoms. 3. Varicocele: It may be related to venous reflux disorder, heredity and other factors, which may cause abdominal distension and pain, and may be accompanied by scrotal distension and other symptoms, and in serious cases, it may cause male infertility. 4. Acute abdominal disease: for example, acute appendicitis, in an acute attack will lead to abdominal distension and pain, and the pain is more intense, may also be accompanied by nausea and vomiting and other symptoms. Men’s abdominal distension, indicating the existence of abnormal conditions, it is recommended to seek medical treatment for appropriate examination and treatment, to avoid adverse effects.