Whether the soaking time, utensils and frequency of traditional Chinese medicine are appropriate has a great relationship with its curative effect. If the brewing time is short, the active ingredients of the drug cannot be brewed out, which affects the therapeutic effect; if the brewing time is too long, the active ingredients (such as volatile components) will be damaged or lost.

Before decoction, soak the medicine in cold water for about 1 hour, which is conducive to the precipitation of the active ingredients of the medicine. Use a casserole as much as possible for decoction, or a metal container. After adding water, the medicine floating on the water should be turned up and down with chopsticks

1. First of all, due to the existence of pressure, the active ingredients in Chinese herbal medicines are easier to decoct, and the protein of animal medicines is easier to hydrolyze. However, some hard minerals and shellfish medicines are not easy to decoct the active ingredients at normal temperature and pressure. The decoction rate of the active ingredients is increased by pressurization and high temperature, which solves the problem of "decoction first".