There are more reasons for 3 small particles growing on the penis, which are commonly found in diseases such as folliculitis, warts and genital herpes. 1. Folliculitis: mainly caused by Staphylococcus aureus infection, usually occurring on the face, head, vulva. Initially, it can be manifested as red follicular papules with pus spots appearing in the center. When the pustule ruptures, a yellow scab will form. 2. Condyloma acuminatum: It is a disease of the skin and mucous membranes of the external genitalia caused by human papilloma virus infection, manifested as mucous membrane superfluous organisms, which can be single or multiple, usually occurring in the external genitalia and anus, with the appearance of small particles. 3. Genital herpes: It is a sexually transmitted disease caused by herpes simplex virus infection. The appearance looks like small granules and often occurs on the penis, glans, scrotum and other parts of the body. In addition to the above, small pellets on the penis can be seen for other reasons, and it is recommended to seek medical attention, follow the doctor’s instructions for further examination, clarify the cause with the doctor’s help, and carry out targeted treatment or therapy.