Decoction method of external Chinese medicine After getting back the Chinese medicine, add appropriate amount of water to soak for 1 hour and make a decoction, which can be done 1 time. Generally, boil it on high heat, then change to low heat for half an hour. When the water temperature is suitable, you can wash the affected area externally. 1 payment can be used for 2 days, 2 times a day. The best way to decoct Chinese medicine is to use a ceramic pot or a sand pot, followed by a white ceramic pot or a stainless steel pot. Avoid using metal utensils such as iron, copper and aluminum for decoction. The amount of water used for decoction is generally appropriate after the tablets are properly pressurized and the liquid surface is submerged through the tablets for about 2cm. Each decoction, we hope to obtain about 500ml of liquid, which is the optimal amount of water. Soaking before decoction is good for the full dissolution of active ingredients, soak for 40 minutes to 1 hour. Decoction fire and number of times First, boil on high heat, and then change to low heat after boiling to maintain about 20-25 minutes. Generally speaking, a dose of medicine can be decocted twice. After the first decoction, strain out the liquid and add water (preferably warm water) for another decoction in the same way as the first one. After the first decoction, strain out the liquid and add water (preferably warm) for another decoction. V. Handling of special decoction method marked on the prescription 1.First decoction: Decoct for half an hour before adding other medicines to ensure the safety of the medicine; 2.Next decoction: Put in other medicines when they are about to be finished, and decoct for about 5 minutes; 3.Wrapped decoction: Wrap the medicine with gauze before decocting with other medicines; 4.Separate decoction: Precious medicines such as ginseng should be decocted separately to avoid the active ingredients being adsorbed by other medicine residue, resulting in waste; 5.Punching It is advisable to add it to the decoction of other medicines or to take it with boiling water.