The key to the boiling time is what kind of medicine is used in the herbal formula. In the case of cold remedies, since the main effect is the volatile oil contained in the medicine, it is sufficient to boil it for 15 to 20 minutes. For general medicines such as tonic medicines, first boil them with a large fire (called martial fire in Chinese medicine). Then it is simmered slowly with a small fire (wenhuo). The idea of “diagnosis and treatment” in Chinese medicine is also reflected in the boiling of medicine. Before boiling the medicine, bubble it with water to help release the active ingredients. Simmer the medicine in cold water. Gradually increase the temperature to help release the active ingredients. A decoction container is suitable for casserole, enamelware, stainless steel, iron is strictly prohibited. Chinese medicine should be soaked in cold water for about 60 minutes before decoction. The amount of water used for decoction is generally 1-3 cm over the surface of the medicine. The amount of water can be increased for large doses and for drugs that can easily absorb water. Decoction time should be determined according to the nature of the medicine. Decoction time should be determined according to the nature of the medicine. Decoction time should not be long for antiphlogistic drugs, antipyretic drugs and aromatic drugs, but 15-20 minutes after boiling. Tonic drugs should be boiled in martial fire and then slow decocted in civil fire for 40-60 minutes. Decoction should be stirred 2-3 times. Each dose of Chinese medicine is usually decocted twice, and the second decoction time can be slightly shorter. Decoction quantity: 50-100ml per dose for children. Adults should take 150-200ml per dose. Decoction method of special drugs: 1. “First decoction”: boil for 10-15 minutes, then add other drugs to the same decoction. 2. “After decoction”: When the general medicine is about to be decocted to a predetermined amount, put in the same decoction for 5 – 10 minutes. 3.”Dissolve medicine”: When other medicines are decocted to the intended amount, take the juice and decoct it on a light fire, stirring constantly to dissolve it. 4.”Pouring medicine”: Pouring medicine into the decoction or boiling water. 5.Other special drugs should be decocted according to medical advice.