Abstract: 【Abstract】 Urticaria is a common skin disease characterized by wheals and pruritus, and some refractory cases showed prolonged duration and poor response to treatment. This guideline is a refinement of the previous version of the guideline for diagnosis and treatment of urticaria in China （2018）, and is developed by dozens of experts from Centre for Urticaria Research, Chinese Society of Dermatology after joint discussions on the basis of recent clinical and investigational advances in urticaria in China and other countries. This guideline is suitable for both Chinese adults and children with urticaria. In addition to supplementing and updating the definition and pathogenesis of urticaria, the guideline also provides detailed explanations about key concerns in clinical practicethe, such as the classification, diagnosis and treatment of urticaria, in the form of questions and answers. The guideline may provide a more comprehensive, scientific and authoritative reference for diagnosis and management of urticaria.

Key words: Urticaria, Diagnosis, Therapy, Guideline