Red spots on the glans after intercourse may be due to excessive friction, bacterial infection, fungal infection, allergy and gonococcal infection, etc. Further examination is recommended. 1. Excessive friction: excessive friction during intercourse can lead to swelling of the glans skin and red spots on the glans. 2. Bacterial infection, fungal infection: may be due to the lack of timely cleaning, the partner has vaginitis and other conditions, caused by bacterial infection or fungal infection, resulting in the emergence of the foreskin glans, the emergence of small red spots. 3. Allergy: If it is due to drugs and silicone condoms and other causes of localized allergies in the glans, it may also lead to the appearance of small red spots. 4. Gonococcal infection: If the sexual partner has sexually transmitted diseases such as gonococcal infection, it may lead to infection of gonococcus and so on, causing the appearance of small red spots on the glans. Therefore, it is recommended to go to the hospital for further examination to clarify the cause of the disease and actively treat it.