Hidden pain in the lower abdominal triangle in men may be caused by prostatitis, cystitis, varicocele and other diseases. 1. Prostatitis: inflammation of the prostate gland caused by pathogenic bacterial infection, the bacterial infection will lead to swelling of the prostate gland, the swollen prostate gland will compress the nerves around it, resulting in pain in the innervated lower abdominal triangle. 2. Cystitis: Inflammation of the bladder caused by pathogenic bacterial infection, the bacterial infection causes swelling of the bladder, the swollen bladder will compress the nerves around it, causing pain in the innervated lower abdominal triangle. 3. Varicose veins of the spermatic cord: the valves of the spermatic cord are easily compressed due to congenital developmental abnormalities and acquired diseases, which increase the resistance to venous return, and the veins of the spermatic cord are prone to varicose, which can lead to pain in the lower abdominal triangle. Men’s lower abdominal triangle pain may also be seen in ureteral stones, enteritis and other diseases, if the symptoms of men’s lower abdominal triangle pain, you need to consult a doctor in a timely manner to check, according to the cause of the corresponding treatment methods.