汤剂在其煎煮过程中有些患者感到不方便,如一剂中药煎煮时,有的须先煎、后下、烊化等,尤其是后下的药物容易忘漏,没有放下煮;或因一些患者对后下药不易理解,使同其它药一起煮,这样就会影响药物的疗效。对此实际问题,笔者将其特殊煎法后下一项改进的设想浅谈之。所谓后下,是指有些药物的有效成分受热后容易挥发逸散,或受热时间稍长即被破坏,这些药物须后下,一般在其它药物煎好之前5～10分钟加入共煎, Decoction in the boiling process of some patients feel inconvenient, such as a decoction of Chinese medicine, some must be fried, after the next, deuteration, etc., especially after the drug is easy to forget to leave, did not put down cooking; or Some patients do not understand the post-dose medication and cook it with other drugs, which will affect the efficacy of the drug. For this practical problem, the author discusses the concept of the next improvement after the special method of frying. The so-called “afterwards” refers to the active ingredients of some medicines that easily evaporate and dissipate when exposed to heat, or they are destroyed when they are heated for a longer period of time. These medicines are required to be added later, and they are usually added 5 to 10 minutes before the other medicines are fried.