Patients with chronic diseases often have questions when taking herbal treatments. Can Chinese herbal medicine be taken for a long time? Because they are worried about that long-term use will damage the liver and kidneys, for the question, the ancients have discussed it in the "Huang Di Nei Jing · Su Wen · Wu Chang Zheng Da Lun". To express it in modern language, it is to use herbs which one of the charaticristics is strong in the highest level to treat diseases, discontinue the herbs, when cure six out of ten; use herbs in middle level to treat the disease and stop the herbs, when cure seven tenths of the disease; use herbs in lowest level to treat the disease and stop the herbs, when cure eight tenths of the disease; use herbs with no baised characteristics to cure the disease, and stop the herbs when cure nine out of ten. Then use foods such as grain, meat, fruits, vegetables, etc., until the body is ok. Do not take medicine and diet too much, otherwise it will hurt people's body. If the body can't be ok, still follow the above methods to treat.