Redness and pain above the urethral opening of the glans may be caused by injury, or it may be caused by circumcision and glansitis, gonorrheal urethritis and so on. 1. Long-term friction of the glans with clothing, if you wear tighter clothes, there may be friction and stimulation leading to injury causing local redness, swelling and pain, if there is vigorous masturbation or sex, can also lead to damage to the glans appear red, swollen and painful. 2. long foreskin or prepuce, do not pay attention to local hygiene, easy to produce a large amount of foreskin scale, can repeatedly stimulate the foreskin and glans, leading to glans phimosis, can also appear glans and foreskin redness, swelling and pain. 3. The occurrence of urinary tract infection, such as gonorrhea urethritis may also appear urethral urethral redness, swelling, pain and so on. Some patients also have symptoms such as frequent urination, urgency, and discharge from the urethra. Redness and pain above the urethral opening of the glans may also be caused by other reasons, when the above situation occurs, you should go to the hospital as soon as possible, identify the cause and follow the doctor’s instructions for treatment.