Penile twitching may be caused by inappropriate sexual life, trauma, seminal vesiculitis, prostatitis, varicocele and so on. 1. Improper sex life: too frequent sex life arrangements, rough movements during intercourse, coupled with poor physical fitness, can lead to penile twitching, accompanied by pain. 2. Trauma: the cavernous tissue of the penis is squeezed, resulting in bruising, swelling and pain, resulting in penile twitching. 3. Vesiculitis: inflammation of the seminal vesicles stimulates the cavernous body of the penis, causing penile twitching, swelling and pain. 4. Prostatitis: Inflammation of the prostate gland causes frequent urination, urinary urgency, painful urination, incomplete urination, and penile twitching. 5. Varicose veins: dilated and tortuous veins lead to poor local blood circulation, causing penile twitching. There may be other reasons for penile twitching, it is recommended to consult a doctor in time to identify the cause of the disease and follow the doctor’s instructions for treatment.