“下法”有狭义、广义之分。狭义即指用药物攻遂体内结滞,通泻大便的一种治法;广义则把下法的应用扩大,不限于邪在胃肠,而在五脏六腑,凡有寒、热、水、血、痰、火只要属实者均可应用,案例如下。1　泻肺法治疗小儿肺炎喘嗽　　顾某,2.5岁,男,患儿素体肥胖,轻咳有痰,自昨晚突然喘 “Under the law” narrow, broad sense. Narrow meaning refers to the use of drugs to attack the body knot stagnation, diarrhea stool a rule of law; generalized then the application of the law to expand, not limited to evil in the gastrointestinal, and in the internal organs, where there is cold, heat, water, blood , Sputum, fire as long as the real person can apply, the case is as follows. 1 Xie Pulmonary treatment of children with pneumonia, cough Gu Mou, 2.5 years old, male, children with obesity, cough with sputum, sudden since last night suddenly asthma