1, bubble Pour the medicine into the medicine pot and spread it out, then add cold water (don't use boiling water) until it is 2 ~ 3 cm higher than the medicine surface and soak it for about 1 hour. If there are many drugs that are easy to soak flowers and grass in the prescription, and the water absorption is large, water should be added appropriately before decocting.

2. Temperature. Generally, strong fire (urgent fire) is used first, and then it is changed to slow fire (slow fire) after boiling. However, some traditional Chinese medicines for treating exogenous diseases can continue to be decocted with strong fire for about 10 minute without slow fire after boiling.

3. Decocting time. Generally speaking, the first boiling takes 30 ~ 40 minutes, and the second boiling takes 15 ~ 20 minutes. The nourishing Chinese medicine is first decocted for 40-50 minutes and then decocted for 25-30 minutes; Traditional Chinese medicine decoction for relieving exterior syndrome 15 ~ 20 minutes once.

Interpretation of special decocting methods of traditional Chinese medicine

1, fry first

The purpose of first decocting is to increase the solubility of drugs and make them give full play to their curative effects. Minerals, shellfish and crustaceans are hard to be decocted, so they must be decocted first. Such as gypsum, magnet, ochre, gibbsite, native copper, keel, oyster, concha Haliotidis, mother of pearl, clam shell, concha arcae, tortoise shell, turtle shell, pangolin scales, buffalo horn, etc. You can mash and fry for about 30 minutes.

Step 2 give up

The purpose of the latter is to reduce the loss of volatile oil or prevent the decomposition and destruction of effective components. Drugs with fragrant smell and rich in volatile oil, such as mint, Schizonepeta tenuifolia, Pogostemon Pogostemonis, Radix Aucklandiae, Fructus Amomi, Lignum Santali Albi, Lignum Dalbergiae Odoriferae, Lignum Aquilariae Resinatum, and Herba Artemisiae Annuae, should be added 5- 10 minutes before decoction.