Men with red spots on the glans without other symptoms may be caused by penile perlis, glans phimosis, mucous membrane injury and other reasons. 1. Penile Pearl Rash: the cause is not clear, may be related to the local cleaning is not in place, infection, etc., can be manifested as reddish pimples, may not be accompanied by other symptoms. 2. circumcision: in the early stage of the disease, due to the stimulation of pathogens, can only appear in the penis or glans red spots, not accompanied by other symptoms. 3. Mucous membrane injury: If the glans is rubbed for a long time, it can lead to rupture of the mucous membrane of the glans, and red spots on the glans can also appear without other symptoms. It is recommended that people with red spots on the glans without other uncomfortable symptoms should go to the hospital in time to clarify the cause, and if treatment is needed, standardized treatment should be carried out under the guidance of the doctor to avoid delaying the condition.