The perineal pain caused by penile erection may be due to the presence of prostatitis or urinary tract infections, which should be treated with medication and physical therapy after diagnosis, and in severe cases, surgical treatment is also required. 1. Prostatitis: you can take medication, apply ciprofloxacin, levofloxacin and other drugs for antibacterial treatment, use tamsulosin, solanacin and other drugs to improve the discomfort of urination, you can cooperate with physical therapy, such as prostate massage, heat therapy, etc., for the particularly serious prostatitis, you can consider surgery, such as incision and drainage surgery. 2. Urinary tract infections, such as cystitis, should be treated with sensitive antibacterial drugs, such as amoxicillin and cefdinir, after diagnosis. The above phenomenon may also be caused by other factors, requiring different treatment. It is recommended that patients go to regular hospitals in time for treatment, and should follow the doctor’s guidance during the treatment period, safe and reasonable use of medication, do not take medication without authorization.