The phenomenon of vague pain in the small abdomen after the erection of the penis may be considered as varicose veins of the spermatic cord, spermatorrhea, orchitis, vesiculitis, urinary tract infection, urethritis and so on may cause. These are also more common clinical diseases, it is recommended to go to the hospital to check the routine urine and semen routine, urinary system ultrasound can make a clear diagnosis. If the pain is not particularly obvious, you can choose to use a hot towel locally, which can play a role in activating blood circulation and removing blood stasis. Pay more attention to rest at home, do not do heavy physical labor, and then observe and see. If necessary, you can choose to use drugs for treatment. For example, clonoxicam tablets or diclofenac sodium delayed-release tablets, it is best to use with the detoxification of the drug such as three gold tablets, fever gonorrhea particles, anti-inflammatory drugs cefradine capsules, levofloxacin hydrochloride tablets and so on.