Abstract： Objective： This paper summarizes and introduces Chinese medicine chief physician XIA Yongliang's clinical experience in treating cough variant asthma. He holds that the pathogenesis of cough variant asthma lies in the result of struggle between “the pathogenic qi and healthy qi” and that in clinical practice，we should not only focus on specific symptoms，but also grasp the characteristics of the disease in each stage and the struggle between the healthy qi and pathogenic qi，and flexibly adjust the treatment plan. In the early stage or at the time of new onset of chronic disease，it is mainly to reinforce the healthy qi to “prevent disease before it occurs”；in the attack stage，the emphasis is on eliminating the pathogenic factors， supplemented with reinforcement of the healthy qi to prevent further development， that is， “preventing further changes of existing disease”； in the remission stage， the degree of seriousness of disease is temporarily mitigated，and then the curative effect should be consolidated to reduce recurrence， that is，“preventing recurrence after the symptoms disappear”. With focus on the core of “exuberance and debilitation of the healthy qi or pathogenic qi， the treatment is given by syndrome differentiation according to the characteristics of pathogenesis in different stages so that the treatment is systematic with sound curative effect.