The length of decoction and the method of decoction are different for different kinds of Chinese medicines, ranging from 10 to 60 minutes. Medicines with aromatic odor and clearing heat and relieving symptoms are usually decocted for about 10~15 minutes, while tonic medicines are usually decocted for 30~60 minutes. However, some medicines need to be decocted first, for example, poisonous medicines such as Chuanwu and附子 need to be decocted for about 30~60 minutes before they are cooked together with other medicines because the toxicity of such medicines can be removed; medicines like ores and shells also need to be decocted for about 30~60 minutes first because the active ingredients of such medicines are not easy to be decocted out. In addition, the different containers will also affect the length of the decoction, and it is appropriate to use a casserole dish when boiling at home. After the discomfort should be timely medical treatment, in the physician’s diagnosis under the guidance of the choice of drug treatment, in order to avoid delays in the condition.