The appropriate amount of water in the simmering of Chinese medicine is slightly over the herbs can be, for the larger water-absorbing herbs can be appropriate to add some more water. Before the decoction of Chinese medicine, first of all, roughly rinse with water to wash off the dust impurities, and then put the Chinese medicine in a casserole dish and add the appropriate amount of water, the amount of water slightly did not over the herbs can be, about higher than the herbs 1 cm -3 cm. After soaking for half an hour, it can be decocted. Generally speaking, Chinese herbal medicines need to be decocted twice, and the same amount of water needs to be put into the second decoction as the first. In addition, for herbs that are more absorbent, such as moneywort and cornhusk, more water can be added appropriately, or decoction can be made instead of water. Simply add slightly more water than the herbs when boiling. If you need to decoct herbs, it is recommended to do so under the guidance of a doctor.