Vitiligo is a chronic,acquired skin depigmentation disease in which patients often develop asymptomatic white spots with clear borders due to the loss of epidermal melanocyte function.At present,the treatment of vitiligo is still a major problem in dermatology.In recent years,the development of photoelectric technology has provided new possibilities for the treatment of vitiligo patients.The mechanisms,methods and therapeutic effects of vitiligo phototherapy in recent years are summarized as follows.