Red spots on the glans of men have the following three possibilities: first, glansitis, if the organism is infected by fungus, trichomonas or bacteria, under the stimulation of inflammation leads to red spots on the glans, red spots are mostly distributed in patches, can be accompanied by obvious pain, for men in the acute phase of inflammation will appear white or milky secretions. Secondly, local allergic reactions cause erythema, also accompanied by penile and systemic skin changes, usually as a side effect of taking drugs, need to immediately stop the drug, and in serious cases immediately seek medical attention. Thirdly, consider men who have had unclean sexual contact leading to syphilis infection. If the red spot on men’s glans is caused by inflammatory infection, you can apply erythromycin ointment and fusidic acid ointment locally to relieve the symptoms, and if it is caused by syphilis, you need to continuously apply long-acting penicillin injection for treatment.