The early stage of vitiligo usually refers to the early stage of vitiligo patient’s condition, Wood lamp examination can be used to assist in the diagnosis of early vitiligo, but the accuracy is limited, if the differential diagnosis can not be confirmed by dermoscopy, histopathological examination. The most important thing is that you can get a good idea of what you are looking for. The Wood’s lamp belongs to a kind of ultraviolet lamp, which is valuable for diagnosing leukoplakic skin diseases. In the clinic if the naked eye can not identify the skin light spot diagnosis disease, can use the Wooden lamp irradiation, when the vitiligo skin lesion performance for porcelain white or gray-white fluorescence, can form a boundary with the surrounding normal skin. But in the early stage of vitiligo disease, because the white spot is not very obvious, the boundary is not clear enough, there may be a problem of not detecting it, so the accuracy is limited. In general, Wood’s lamp examination is a means to assist in the diagnosis of vitiligo and can also be used for the diagnosis of various skin diseases with abnormal pigmentation or skin diseases caused by infection, such as skin tumors, lichen planus, anemic nevus and other diseases. It is necessary to pay attention to avoid too bright environment during the examination, it is easier to show up in a dark environment. If you suspect suffering from vitiligo, and wood lamp examination results combined with clinical performance can not be confirmed, or recommended as soon as possible to the hospital, can apply dermoscopy, if necessary, it is recommended to do histopathological testing to clarify the diagnosis, generally speaking early detection, early treatment of vitiligo treatment and recovery has an important significance.