Male trichomonas infection can be topical metronidazole gel. Male trichomonas infection may cause trichomonas glans, causing local redness, swelling, pain and other inflammatory reactions, can be treated with topical metronidazole gel, which is an anti-anaerobic drug as well as a topical drug for trichomonas infections. Adverse reactions have occasionally seen local skin irritation reactions such as redness, swelling, stinging and other symptoms. The use of the drug is prohibited for those who are allergic to the drug, avoid contact with the mucous membranes of the mouth and nose and the eyes, and be careful when using the drug in allergic patients. Men with trichomonas infections are advised to go to the hospital for examination first, and the drug needs to be used under the guidance of a professional doctor.