Male lower abdominal pain on the left side may be caused by prostate hyperplasia, left ureteral stones, Crohn’s disease and other causes, can be treated to relieve the symptoms of pain, different causes of different treatments, common treatments are medication, surgical treatment. 1. Prostatic hyperplasia: patients can follow the doctor’s instructions to use alpha-blockers for treatment, such as tamsulosin capsules, doxazosin tablets, etc., but also follow the doctor’s instructions to use the M-receptor antagonists, such as ocibuprofen tablets, tolterodine tablets, etc., but also follow the doctor’s instructions to carry out surgical treatments, such as transurethral resection of the prostate, transurethral laser surgery and so on. 2. left ureteral stone: patients can follow the doctor’s instructions to use non-steroidal analgesic anti-inflammatory drugs, such as indomethacin tablets, diclofenac sodium extended-release tablets, but also follow the doctor’s instructions to use morphine tablets, Tramadol tablets and other opioid analgesic drugs, but also follow the doctor’s instructions for surgical treatment, such as extracorporeal shockwave lithotripsy, ureteral placement of stents, and so on. 3. Crohn’s disease: patients can follow the doctor’s instructions for the use of glucocorticoids for treatment, such as prednisone tablets, hydrocortisone tablets, but also the use of methotrexate tablets, azathioprine tablets and other immunosuppressive drugs for treatment, but also follow the doctor’s instructions for surgical resection. Specific treatments need to go to the hospital to confirm the diagnosis, under the guidance of the doctor to choose, the patient must not be unauthorized use of drugs, stop or change drugs.