1. There are two main points in decocting Chinese medicine: one is the amount of water added; the other is the decoction time. The amount of water is generally submerged in more than 1 knuckle (except for leafy or bud-shaped drugs that float on the water surface because of their light quality), and the decoction time is generally boiled in a large fire and slowly simmered in a small fire, and then decocted for about half an hour to forty minutes; the juice is poured out and decocted a second time with water for about thirty minutes, then the slag is removed and the first and second juices are combined together and decocted into 500ml. Generally, the prescription requires the first decoction to be decocted 2 hours in advance (the first decoction and long decoction of minerals is usually to fully decoct the active ingredients to improve the efficacy; the first decoction of toxic drugs is to reduce toxicity and irritation to the gastrointestinal tract), and then decocted together with other drugs, while the later decoction can be put in 10 minutes before the end of the second decoction. The drugs for package decoction need to be put into the cloth bag for decoction. 2.How to take purely pro-righteous Chinese medicine can be taken on an empty stomach; anti-tumor drugs are usually taken in two to three times, half an hour to one hour after meals (taking drugs after meals can avoid direct damage to the stomach and intestines due to the protection of food in the stomach, especially detoxifying and dispersing drugs that dispel evil). It can also be taken several times a day, and it is best to finish the dose within a day. 3, forbidden food forbidden to eat dog meat, mutton (these two types of hot food, more food injury fluid, easy to cause dry mouth and throat, dry cough, etc.), if the patient Yang deficiency fear of cold can be less food, the general principle of stomach happy is safe; bee milk, royal jelly, clams film oil (these several health food because of a small amount of hormones long-term use may cause immunosuppression), liquor, tobacco (can be depleted fluid and injury to the lungs). Cordyceps and other precious herbs are used with caution, because of the high price and limited efficacy, patients are generally not recommended to take, Bailing capsules, Jin Shui Bao and other drugs can be substituted.