Pellets on the penis may be caused by scrotal eczema, pearly penile papules, condyloma acuminatum, sebaceous ectasia, and so on. 1. Scrotal eczema: refers to the eczema that occurs in the scrotum, the patient’s scrotum will appear the size of a grain of corn, accompanied by intense itching, the scope of the lesion may also extend to the penis, foreskin and other parts. 2. Pearly penile papules: when a man suffers from pearly penile papules, it may be caused by local irritation, circumcision and so on, the patient’s glans, penis and other parts of the pearly, translucent particles will appear. 3. Condyloma acuminatum: If a man suffers from condyloma acuminatum, it may be caused by unclean sexual contact with human papillomavirus infection, which may be manifested as protruding particles, and the particles will gradually increase in size and increase in number, and accompanied by local secretion increase, pain and other symptoms. 4. Sebaceous gland ectasia: If male patients with sebaceous gland hyperplasia and developmental abnormalities, it may lead to sebaceous gland ectasia, resulting in the penis, prepuce and other parts of the body, the appearance of corn grain size flat papules, yellowish or white. Men appear penis growth particles, should immediately go to the regular hospital urology department for consultation, identify the cause of the disease after active treatment, so as not to delay the condition.