芦火竹火主煎一切滋补药（本草纲目）【用】（李时珍云）陈芦枯竹火取其不强不损药力
也
桑柴火取其能助药力 炭取其力慢栎炭取其力紧温养用糠及马屎牛屎者取其缓而能使药力匀
遍也【制】凡服汤药虽品物专精修治如法而煎药卤莽造次水火不良火候失度则药亦无功观夫
茶味之美恶饭味之甘 皆系于水火烹饪之得失即可推矣是以煎药须用小心老成人以深罐密封
新水活火先武后文如法服之未有不效者
艾火主灸百病若灸诸风冷疾入硫黄少许尤良（本草纲目）【用】（李时珍云）凡灸艾火宜
用
阳燧火珠承日取太阳真火其次则钻槐取火为良若急卒难备即用真麻油灯或蜡烛火以艾茎烧点
于炷滋润灸疮至愈不痛也【性】温热【气】炎阴中之阳也【禁】戛金击石钻燧八木之火皆不
可用（邵子云）火无体因物以为体金石之火烈于草木之火也【忌】所谓入木者松火难瘥柏火
伤
神多汗桑火伤肌肉柘火伤气脉枣火伤内吐血橘火伤营卫经络榆火伤骨失志竹火伤筋损目也
（南齐书）载武帝时有沙门从北齐 赤火来其火赤于常火而小云以疗疾贵贱争取之灸至七炷
多
得其
阳燧（纲目附录）○（李时珍云）火镜也以铜铸成其面凹摩热向日以艾承之则得火周礼司
氏
以火燧取明火于日是矣火珠（见本部水精下）
芦火和竹火主要用于煎煮各类滋补药物（出自《本草纲目》）。【用法】李时珍说：使用陈旧的芦苇和干枯的竹子燃烧的火，是因为这种火势不强不弱，不会损伤药力。桑柴火取其能够辅助药力；炭火取其火力缓慢；栎木炭火取其火力紧实而温热，适合温养之用；用谷糠、马粪、牛粪等作为燃料，是取其火力缓和，能使药力均匀分布。【炮制与煎煮】凡是服用汤药，虽然药材品种精良、炮制方法得当，但如果煎药时马虎草率，水火控制不当，火候失去节度，那么药物也就没有疗效了。观察茶味的优劣、饭味的甘美与否，都取决于水火烹饪的得失，由此可以推知煎药的重要性。因此，煎药必须使用细心稳重的成年人，用深罐密封，使用新水、活火，先武火后文火，按照规范煎煮服用，没有不见效的。
艾火主要用于灸治各种疾病。如果灸治各种风冷病证，加入少许硫黄效果更佳（出自《本草纲目》）。【用法】李时珍说：凡是用艾进行灸疗，火源宜采用阳燧（聚焦日光取火的铜镜）或火珠承接太阳真火；其次则钻槐木取火为最好；如果紧急难以准备，就使用纯麻油灯或蜡烛的火，用艾茎点燃在艾炷上，滋润灸疮直到痊愈且不疼痛。【性味】温热。【气机】属于炎上的阴中之阳。【禁忌】敲击金属、撞击石头、钻木以及“八木”之火都不可使用。（邵雍说）火没有固定的形体，是依附于物体而呈现形体的，金石之火比草木之火猛烈。【忌避】所谓“入木”之火的危害：松木火难以治愈疾病，柏木火伤害神志且导致多汗，桑木火伤害肌肉，柘木火伤害气脉，枣木火伤害内脏导致吐血，橘木火伤害营卫经络，榆木火伤害骨骼导致失志，竹木火伤害筋腱并损害眼睛。（《南齐书》记载）南齐武帝时期，有僧人从北齐带来赤火，这种火比常火颜色更红但体积更小，声称用来治疗疾病，无论贵贱都争相求取，灸至七壮，大多能取得疗效。阳燧（《本草纲目》附录）○李时珍说：火镜，用铜铸造而成，其表面凹陷，摩擦发热后对着太阳，用艾草承接即可得火。《周礼·司氏》以火燧从日中取得明火，说的就是这个。火珠（见本部水精条下）
Reed fire and bamboo fire are primarily used to decoct all kinds of nourishing medicines (Compendium of Materia Medica). [Usage] Li Shizhen stated: Using the fire from old reeds and withered bamboo is chosen because it is neither too strong nor too weak, thus not damaging the medicinal power. Mulberry wood fire is chosen for its ability to assist the medicinal power; charcoal fire is chosen for its slow heat; oak charcoal fire is chosen for its tight, warm heat, suitable for warming and nourishing; using bran, horse manure, or cow manure as fuel is chosen because their heat is gentle, allowing the medicinal power to be distributed evenly. [Preparation and Decoction] Whenever taking herbal decoctions, even if the ingredients are exquisite and processed according to regulations, if the decoction process is careless, and the water and fire control are improper or the heat intensity is lost, the medicine will be ineffective. Observing that the quality of tea and the sweetness of rice depend on the success or failure of water and fire cooking, one can infer the importance of decocting medicine. Therefore, decocting medicine requires careful and mature adults, using deep pots sealed tightly, fresh water, and active fire, starting with vigorous fire (Wu Huo) and switching to mild fire (Wen Huo), following the correct method. There is no case where it fails to be effective.
Moxa fire is primarily used for moxibustion to treat various diseases. If treating various wind-cold disorders, adding a small amount of sulfur yields particularly good results (Compendium of Materia Medica). [Usage] Li Shizhen stated: For moxibustion with moxa, the fire source should ideally be obtained using Yangsui (sun-gathering bronze mirror) or Huozhu (fire pearl) to capture the true fire of the sun. Secondly, drilling locust wood for fire is best. If urgently needed and difficult to prepare, pure hemp oil lamps or candle flames may be used. The moxa stem is ignited and applied to the moxa cone; this moistens the moxibustion wound until it heals without pain. [Nature] Warm and hot. [Qi Mechanism] It belongs to the yang within yin, characterized by ascending flame. [Contraindications] Fire from striking metal, hitting stone, drilling wood, and the "Eight Woods" fire are all unusable. (Shao Yong said) Fire has no fixed body; it takes form through objects. Fire from metals and stones is fiercer than fire from grass and trees. [Taboos] Regarding the harms of "Wood-Entering" fires: Pine fire makes diseases hard to cure; Cypress fire damages the spirit and causes excessive sweating; Mulberry fire damages muscles; Zhe wood fire damages Qi and vessels; Jujube fire damages the interior causing hematemesis; Orange fire damages Ying and Wei and collaterals; Elm fire damages bones causing loss of will; Bamboo fire damages sinews and impairs vision. (Book of Southern Qi records) During the reign of Emperor Wu of Southern Qi, a monk brought "Red Fire" from Northern Qi. This fire was redder than ordinary fire but smaller in size, claimed to treat illnesses, and was sought after by people of all social statuses. Moxibustion up to seven moxa cones often achieved efficacy. Yangsui (Appendix to Compendium of Materia Medica) ○ Li Shizhen stated: A fire mirror, cast from copper with a concave surface. When rubbed to generate heat and held towards the sun, it ignites moxa. The "Si Shi" official in the Rites of Zhou obtained bright fire from the sun using a fire drill, referring to this. Huozhu (See Water Crystal entry in this section)