Possible causes of glans redness: 1. Bacterial glans inflammation, can appear glans surface redness, can appear flaky red spots with erosion, in serious cases can appear oozing or bleeding, etc.. It is usually accompanied by glans pain, increased secretion, and in severe cases may be accompanied by frequent urination, urinary urgency, and painful urination. It is often due to a history of impure sexual contact, exposure to pollutants or circumcision, circumcision can also lead to glansitis and requires anti-infection treatment. 2. fungal glansitis, often seen as a fungal infection, can occur in patients with low immunity or long-term antibiotic use fungal growth infection. The glans can appear flaky erythema with small papules, exudation, also visible white pseudomembranes, fungal film, etc.. A cheese like discharge with itching and pain in the glans may be seen. The treatment requires the retention of fungal smear and culture examination to confirm the diagnosis, and topical antifungal drug treatment. 3, trauma to the glans, such as strenuous friction or glans exposed after circumcision, often friction with underwear can lead to local flaky redness, but there is no obvious exudation, friction for a long time local keratinization of the glans can be formed, there is generally no obvious pain.