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中药里炭的应用很广,成品种类也很多,如杜仲炭、地榆炭、艾炭、蒲黄炭、栢叶炭、莲房炭、棕炭等十余种。因此,炮炙方法亦各有殊异。作者认为对炭的总的要求是:制到外部焦黑,里面焦黄为度,使药料有一半炭化,另一半存性,并且要仍能尝试出药料原有的气味,不能制成灰,使灰化后药力全失。过去炭的一般制法:将生药(饮片)用急火炒,至冒烟时,将药点火着自燃为止,喷水卽妥。结果有药炭50～60％成灰,使疗效減低。
The use of charcoal in traditional Chinese medicine is very wide, and there are many kinds of finished products, such as more than ten species of Eucommia ulmoides, Radix charcoal, Ai charcoal, Puhuang charcoal, Baiye charcoal, lotus house charcoal and brown charcoal. Therefore, the artillery methods are also different. The author believes that the overall requirement for charcoal is: to produce external charred, the degree of yellowing inside, so that half of the carbonization of the drug, the other half of existence, and still can try out the original smell of the drug, can not be made of ash, Make all the medicine lost after ashing. In the past, the general method of charcoal production: The raw medicine (decoction pieces) was fried with an emergency fire until smoking, the medicine was ignited with spontaneous combustion, and the water spray was properly prepared. As a result, 50 to 60% of medicinal charcoal is formed into ash and the curative effect is reduced.