Clear blisters on the genitals of boys do not hurt or itch, and may be caused by inflammatory lesions, genital herpes, and other factors. 1. Inflammatory lesions: localized bacterial infection may cause inflammatory lesions, resulting in penile skin edema, which is prone to transparent blisters. 2. Genital herpes: the appearance of clear blisters on the penis can also be considered related to viral infection. Genital herpes is a sexually transmitted disease, related to herpes simplex virus infection, most patients may not have obvious symptoms, a small number of patients may have herpes and ulcers in the genital area. In summary, the appearance of transparent blisters on male genital organs is considered to be related to the above factors, and it is recommended to pay attention to local care and go to the hospital for examination and clear diagnosis.