Men with abdominal swelling, pain is mainly caused by prostate disease, there can be chronic prostatitis or prostate cancer, the patient can check the prostate fluid routine and ultrasound of the urinary system to clarify whether the disease is caused by. Chronic bladder inflammation or urinary tract infection can also occur in the lower abdomen pain, swelling, patients need to check the urine routine to clarify whether there is a urinary tract infection. Lower abdominal pain, for elderly men also exclude whether there is prostate hyperplasia caused by urinary retention and neurogenic bladder, need to be assessed by urodynamic examination, once found prostate hyperplasia or bladder nerve dysfunction should be timely treatment, to prevent the emergence of hydronephrosis affecting renal function. This condition can be treated with medication for a period of time, and if the effect is not good, surgery should be considered to relieve the obstructive disease.