“肺与大肠相表里”是中医整体观念的一个重要体现。小儿脏腑娇嫩,形气未充,易感外邪,而肺为娇脏,为最高之华盖,最易为外邪所伤。肺以宣降为和,大肠以通导为顺,只有肺与大肠气机协调,才能使邪有出路,外感之邪不得以在体内停滞甚至入里转归。在治疗上外感肺病时需注意保证肠道功能的正常运行,必要时以治肠来达到治肺的目的。本文通过几个病例来浅谈釜底抽薪之法在小儿外感肺病中的应用体会。 “Lung and large intestine phase ” is an important manifestation of the overall concept of traditional Chinese medicine. Infantile visceral delicate, gas is not filled, susceptible to evils, while the lung is Jiao dirty, the highest of the canopy, the most vulnerable to evil wounds. The lung to declare as and, the colorectal conduction, only the lungs and the large intestine to coordinate, in order to make evil a way out, the external sense of the evil may not stagnate in the body or even turn in. In the treatment of exogenous lung disease should pay attention to ensure the normal operation of intestinal function, if necessary, to rule the intestine to achieve the purpose of governance of the lungs. This article through several cases to talk about the drastic changes in the method of pediatric exogenous lung disease in the application experience.