The process of boiling Chinese medicine generally need to add water twice, the first addition of water to the amount of water above the surface of the degree; the second addition of water for the first addition of one-third to one-half of the amount of water. The second addition of water is one-third to one-half of the first addition of water. However, you should consult your doctor for the specific method. The first addition of water: you need to place the drug in a container, add water to soak for 30 to 60 minutes, and then decoct. When decocting, the amount of water added should generally be no more than 2-3cm of the drug, you can fire the decoction, filter out the juice after cooking, this is the first decoction. The second addition of water: add water to the drug for the second time and decoct for the second time, this is the second decoction. The amount of water added is one-third to one-half of the amount of water added in the first decoction, because it has been decocted for the first time, so the amount of water added in the second decoction should be reduced appropriately. Mix the juice of the two decoctions and take it in portions. If you do not have experience in boiling medicine, it is better to boil the medicine by the hospital or under the guidance of medical professionals, and individuals should not boil the medicine arbitrarily, so as not to affect the efficacy of the medicine.