Boiling Chinese medicine has requirements for decoction utensils, decoction water, water volume, fire and decoction method. Generally speaking, ceramic vessels and casseroles are good for decocting, and stainless steel vessels can also be used, avoiding the use of iron and copper vessels. The capacity of the decoction vessel should be slightly larger to facilitate the turning of the medicine and avoid the spillage of the medicine. The water used for decoction is clean, fresh and free of impurities, such as tap water and distilled water. The amount of water can depend on the amount of medicine, texture and decoction time, generally 3-5cm above the plane of the tablets. Each dose of medicine is usually decocted 2 times, and there are also 3 times of decoction. The amount of water in the first decoction can be more, and the amount in the second and third decoctions can be slightly less. The amount of medicine obtained from each decoction is about 150mL. Generally speaking, there are “martial fire” and “civil fire” for decoction. The rapid decoction is called “martial fire”; the slow decoction is called “literary fire”. It is conventional to use the fire first, and then switch to the fire after boiling. Before decoction, the medicine should be soaked for 20-30 minutes before decoction, so that the active ingredients can be easily decocted. Some Chinese medicines have special decoction requirements, and it is recommended to take them under the guidance of a professional doctor.