Pityriasis rosea belongs to inflammatory erythematous scaly skin disease, its specific pathogenesis is unknown, may be related to viral infection as well as cellular immune reaction, neuropsychiatric factors, etc., generally after symptomatic treatment 4-8 weeks can be cured. The typical clinical manifestation of pityriasis rosea is the scaly oval ring-shaped erythema of the long axis of the lesions parallel to the skin lines, and itching of different degrees can occur, and some patients will appear in the early stage of the disease, such as weakness, low fever, decreased appetite, enlarged lymph nodes and other flu-like symptoms. Pityriasis rosea is self-limiting, some patients will leave pigmentation after the rash fades, this process is about 4-8 weeks, clinical also have a few patients’ disease will be extended to more than half a year. The clinical treatment of pityriasis rosea aims at shortening the course of the disease and improving the symptoms. Those with obvious itching can systematically use antihistamine drugs, local lesions can be topical glucocorticoid creams, etc. Other NB-UVB phototherapy and antiviral treatment can also be used.