A. The decoction container should be a casserole, ceramic vessel or stainless steel, and iron is prohibited. Chinese medicine should be soaked in cold water for 20-30 minutes before decoction. The amount of water used for decoction is generally 2-3 cm above the surface of the medicine. The amount of water can be increased for large doses and for drugs that can absorb water easily. Third, the decoction time should be determined according to the nature of the medicine. Generally, the medicine is boiled and then decocted for 20 minutes with a gentle fire. The decoction should be stirred 2-3 times. Each dose of herbal medicine should be decocted twice, and the second decoction should preferably be made with an appropriate amount of hot water, and the decoction time can be slightly shorter. It is not easy to decoct superficial drugs and aromatic drugs for a long time, just boil them for 15 minutes after boiling, and for tonic drugs, first boil them with martial fire and then slow decoct them with civil fire for 30-40 minutes. Dose: Mix the above two decoctions and take 100-200ml per dose for children and 300-400ml per dose for adults, divided into two doses. V. Decoction method of special drugs: 1. First decoction: Decoct the drug for 10-15 minutes and then add other drugs to the same decoction. 2.Post decoction: When the general medicine is decocted in a predetermined amount, then put in the same decoction for 3-5 minutes. 3.Punch down medicine: Just add the medicine into the decoction and stir it continuously to dissolve. 4.Separate swallowed medicine: swallow with the medicine juice and warm water. 5.Melting and punching medicine: Just crack the medicine that needs to be melted and then decoct it with the decoction for 3-5 minutes until it dissolves.