The glans is folded and the urethra is red, it may be a physiological phenomenon, but also may be due to glans, urethritis and other reasons. 1. Physiological phenomenon: through sexual stimulation, the penis in the erectile state, the penis becomes weak, may cause local congestion, the glans has folds, coupled with sex or masturbation stimulation will cause the urethral opening red performance. If there is no pain, itching and other symptoms, generally no treatment, pay attention to hygiene, prevention of infection can be. 2. glans: external bacteria, trichomonas, candida and other pathogenic bacteria infection may cause glans, resulting in mucosal congestion and swelling, may also lead to glans folds and urethral red. Especially in the presence of phimosis and circumcision is more likely to appear glans. 3. Urethritis: Escherichia coli, Staphylococcus aureus, Neisseria gonorrhoeae, Mycoplasma and other pathogenic bacteria infections, caused by urethritis may cause congestion and swelling of the urethra, urethral secretion, increased stimulation of the glans may also cause congestion of the glans, glans folds, may also be manifested in the glans folds and urethral urethral urethral urethral urethral urethral urethral urethral urethral urethral urethral folds and most of the frequency of urination, urinary urgency, urination and other painful symptoms. Glans folds and urethra red, there may be other reasons, it is recommended to go to the hospital in time to check, follow the doctor’s instructions for treatment.