哮喘有寒、热及寒喘兼阳虚之分。《景岳全书》载有：“喘有夙根，遇寒即发，或遇劳即发者，亦名哮喘”。外感风寒，寒伏肺俞而聚液生痰，或素体阳虚，气不化津而致寒痰内伏发为哮喘。素体阴虚，痰热郁肺，或寒痰久伏化热则发为喘。哮喘反复发作，肺气耗散，肾液压钢坝  阳虚亏，气不摄纳为寒喘兼阳虚。
Asthma can be divided into cold, heat, cold asthma and yang deficiency. "Jing Yue Quan Shu" contains: "asthma has long roots, when cold hair, or when hard hair, also known as asthma.". Asthma is caused by exogenous wind chill, cold Fu Fei Shu and accumulation of liquid to produce phlegm, or deficiency of element body Yang, and cold phlegm caused by Qi not transforming into Tianjin. Yin deficiency, phlegm and heat stagnation of the lung, or cold phlegm Long Fu Hua heat is asthma. Asthma attacks repeatedly, Lung Qi dissipation, kidney yang deficiency, Qi not absorbed for cold asthma and yang deficiency