The cause of pityriasis albuginea is still unclear, may be related to malnutrition, vitamin deficiency, excessive sunlight and so on. White pity rash also called simple pity rash, commonly known as “peach fungus” or “worm spot”, because the good occurrence in the spring, may and parasitic infection and get the name. The current study believes that this disease is sometimes a manifestation of atopic dermatitis, but not necessarily limited to patients with atopic constitution. The disease has been associated with infectious factors such as Malassezia furfur, but no bacteria, fungi or viruses have been cultured or isolated, nor has it been shown to be associated with intestinal parasites such as Ascaris lumbricoides. Malnutrition, vitamin deficiency, wind, sunlight, and soap, as well as excessive washing of the affected area and dry skin may be predisposing factors. The disease has a tendency to heal itself and generally does not require treatment. Oral vitamin B complex or pediatric multivitamin element tablets can be taken, avoid washing with alkaline soap or hot water to avoid destroying the skin barrier, and emollient creams such as silicone cream, vitamin E ointment, erythromycin ointment, etc. can be used. If there is erythema, a small amount of Epidermolysis Bullosa ointment can be used once a day, and it is not recommended to add it when there is only a grayish rash. The cause of pityriasis albuginea is complex, is not completely clear, can analyze the possibility according to the above content with reference to their own situation, the disease has a good prognosis, generally does not recur, to observe the treatment can be mainly.