A lot of red pimples on the glans may be caused by bacterial glans, condyloma acuminatum, genital herpes and other reasons. 1. Bacterial glans: due to the bacterial infection of the glans localized inflammatory reaction, causing red pimples, can see a lot of red pimples on the glans, and accompanied by itching. 2. Condyloma acuminatum: it is caused by human papilloma virus infection, mainly transmitted through sexual behavior, preferred in the glans, coronary groove, etc., can cause red pimples in the glans, that is, “red pimples”. 3. Genital herpes: it is caused by herpes simplex virus infection, mainly transmitted through sexual contact, occurring in the genitals and perineum, men are more common in the foreskin, glans and other places. A lot of red pimples on the glans may have other causes, it is recommended to actively seek medical attention, under the guidance of a professional physician.