Tiny particles on the foreskin, the more common benign lesions are fat granules, sebaceous ectasia, these cases are benign lesions, not infectious, can not need special treatment, the patient can be observed for a certain period of time. If these particles in the short term appeared obvious changes in the number or volume has increased, and accompanied by redness, swelling and pain discomfort, may be due to lack of hygiene caused by folliculitis or the patient has a history of unclean sexual intercourse and sexually transmitted diseases, need to exclude the genital herpes, warts, pseudo-molluscum contagiosum, molluscum contagiosum and so on these sexually transmitted diseases. When these abnormal symptoms are found, the patient can promptly consult a doctor, and at the same time to maintain local hygiene and dry, avoid sexual intercourse.