Guided by the theory of "mutual dependence of ascending and descending"， recurrent pediatric cough and asthma are considered to result from the imbalance of the ascending and descending of

zang

-

fu

organ

qi

， which is closely associated with deficiency， phlegm， and blood stasis. In clinical practice， the disease is treated based on differentiation during the initial stage， progression stage， and stable stage. In the initial stage， the pathogenesis is attributed to lung deficiency complicated by external pathogens and liver

qi

rising to attack the lung； the treatment should focus on restraining the lung and calming the liver， using the self-formulated

Longchai Yuchuan Fomulation

（龙柴愈喘方）. During the pr

ogression stage， the disorder is due to the spleen failing to ascend clear

qi

and the kidney failing to grasp

qi

， leading to phlegm formation from deficiency； treatment should focus on tonifying spleen

yang

， supplementing kidney

qi

， and resolving phlegm and fluid retention， using a modified combination of

Linggui Zhugan Decoction

（苓桂术甘汤） and

Jinkui Shenqi Pill

（金匮肾气丸）. In the stable stage，

qi

deficiency leads to poor consolidation， with phlegm turbidity and blood stasis； the treatment should aim at tonifying

qi

， transforming phlegm， and dispelling blood stasis， using a modified version of

Guizhi Fuling Pill

（桂枝茯苓丸）.