The male root mostly refers to the root of the penis, and the growth of a granule is mainly considered to be related to folliculitis, polyps, warts and genital herpes. 1. Folliculitis: can lead to the appearance of granular bumps in the affected area, and accompanied by red, hot, itchy, painful and other uncomfortable symptoms. 2. Polyps: the appearance of polyps in the affected area, in the early stage of the onset of the disease, can be manifested as granular bumps. In most cases, the patient has no other symptoms. 3. Condyloma acuminatum: mainly caused by infection with human papilloma virus, which can lead to the appearance of a red rash on the affected area, which gradually develops into granular buds and eventually forms cauliflower-like warts. 4. Genital herpes: mainly caused by infection with herpes simplex virus, which can lead to the appearance of granular blisters on the affected area. There are many other causes of granular bumps on the root of the male penis. It is recommended to go to the regular hospital for examination, to diagnose the cause of the disease, to be targeted treatment, and strive for a speedy recovery.