30-year-old face long white spots may be white furfura, vitiligo, florid furfura, as well as idiopathic punctate hypopigmentation and other causes. 1. White furfur: the etiology of white furfur is not clear, and it is considered to be related to Malassezia furfur infection. The patient’s face, upper arms, neck will appear oval, round pigmentation spots, plaques will be attached to fine chaff-like white flakes. If the 30-year-old patient face long white chaff, then after the performance of localized white spots. 2. Vitiligo: Vitiligo is a multifactorial disease of acquired pigment loss. Patients will appear skin white spots, and white spots often appear in the face, back of the hands, neck and other parts. Therefore, 30-year-old patients with vitiligo on the face will have the symptom of white spots on the face. 3. florid chaff rash: florid chaff rash is mainly caused by Malassezia infection, the patient will appear white, light brown, reddish, yellowish patches, and chaff rash surface will be covered with scales. If a 30-year-old patient has florid furuncle on his face, he will have the symptom of white spots. 4. Other: 30-year-old patients with long white spots on the face may also be caused by idiopathic pitting hypopigmentation, chemical burns and so on. It is recommended that 30-year-old patients with long white spots on the face should consult a doctor in time to find out the cause and choose the appropriate treatment under the doctor’s guidance.