Pieces of small bumps on the foreskin may be the result of pearly penile papules, condyloma acuminatum, glans penis and other factors. 1. pearly penile papules: occurring in the junction area of the glans penis and prepuce in young and middle-aged men, translucent small papules can appear, usually arranged in a ring along the coronal groove, like a pearl necklace. 2. Condyloma acuminatum: it occurs in the external genitalia and around the anus, and can involve the foreskin, glans, and penile body, etc. Single or multiple small pimples may appear in these locations, and generally increase gradually, and may expand and merge at a later stage. 3. Foreskin glansitis: mostly seen in men with long foreskin or prepuce, the foreskin of penis may appear swelling, erythema, vesicles, oozing and other symptoms, and blisters may appear in severe cases. If there are patches of small bumps on the foreskin, you should consult a doctor in time to avoid delay.