Boiling Chinese medicine is generally not necessary to clean, cleaning may cause some of the herbs lost, loss of active ingredients, after the concoction of the drug is affected and so on. In general, Chinese medicine is processed through the drinking tablets, after cleaning and other treatment processes, the herbs are relatively pure, do not need to be cleaned again before decoction. Some herbs are in powder or granular form, which will cause the loss of herbs after cleaning, for example, Pu Huang, Gypsum, Lycopersicon, etc. Some medicines are soaked and the active ingredients are precipitated, which may cause the loss of some of the active ingredients after cleaning and ultimately affect the efficacy, e.g. wolfberries. In addition, some drugs are specially concocted, cleaning may affect the concocted herbs, for example, wine rhubarb, vinegar fragrant herbs, cleaning may lead to the loss of wine, vinegar, etc. carried by the drug, affecting the final efficacy. When boiling Chinese medicine, it is recommended to go to a regular hospital and operate under the guidance of a professional physician to identify the evidence.