As for the treatment of chronic diseases, there is not only a formula, but also a guard. The treatment of miscellaneous diseases should be avoided if it is cold at the beginning and hot at the end, and if it is suddenly attacked and supplemented. Some people ask, although there are many miscellaneous diseases, in general, only gas, blood, water, insects, etc., we should understand its essence, grasp its characteristics, medicine with the evidence, the target. If you don’t know what you’re doing, don’t you think you’ll fall into fundamentalism and miss your patients? Yes, Bianchi once said: “People have many diseases, but doctors have few paths”. Although the disease is chronic, but mixed and mixed, inevitable, identification and treatment, difficult to catch a corner. The primary and secondary contradictions, often transformed, randomly to go, and why can not be bound to one side of a drug. But what I call having a prescription with a guard, is that after the identification, either phlegm can be expelled, or worms can be driven away, or stagnant qi can be unblocked, or tired blood can be revitalized, only the remaining vital energy to be restored, or after the typhoid and warm disease and blood loss, qi and blood to be replenished; or chronic infectious diseases, such as consumption, leprosy, or modern medicine, such as liver cirrhosis, chronic hepatitis, chronic pyelonephritis, chronic nephritis, etc., if the condition is relatively stable and unchanged, the examination of the evidence is confirmed. If the condition is relatively stable and unchanged, and the evidence is confirmed, the prescription should be kept without replacement. Some chronic diseases are caused by gradual, not overnight, and their formation is often from micro-not visible quantitative changes to qualitative changes, and their disappearance also needs to go through quantitative changes to reach qualitative changes. It should be known that in the process of quantitative changes in chronic diseases, the disease is relatively stable, not only doctors do not observe much, even the patient himself also cast much feeling. An allopathic prescription, the first cast or no effect can be seen, if the doctor is inconclusive, coupled with the patient’s demand for quick results, it will be to change course. But this will not be a big harm. The most fear is that the medicine has been effective, that is, not yet revealed, is subtle quantitative changes in the stage, if a suspension of the prescription, or change other prescriptions, not only the previous work abandoned, but also afraid that the branches, and even cause another disease. Of course, non-fatal diseases, the patient itself has natural healing ability, after a period of hard struggle with the disease, there are also cured or prolonged life. In the treatment of chronic diseases, the ancients often saw in their medical cases that they were cured by 30 doses, 50 doses, or even more than 100 doses. On the surface, it seems to be slow and dawdling, worn out by the old man, and inferior to the steed’s foot for a thousand miles. In reality, it is impossible to keep the prescription for a long period of time without having a good sense of vision and perseverance. In terms of treatment, it is often illogical to throw three or more doses of medicine at the evidence of long-standing deficiency and accumulation of loss, that is, to be effective. I remember that in my early years, when I was in Heze, Shandong Province, the treatment of chronic diseases, eager to seek success, not enough and not good enough. A famous old Chinese doctor was experienced in clinical evidence. I watched him carefully as he treated chronic diseases, and the treatment was very effective. A year later, I asked him to pass on some secret and miraculous prescriptions to me, and he laughed and said, “What secret and miraculous prescriptions are there, don’t you often see my clinical prescriptions?” I suddenly realized and said, “Yes, in your prescriptions for chronic diseases, except for the usual prescriptions for regulating qi and blood, nourishing yin and warming yang, I have not seen any miraculous prescriptions. Then, how can there be so much and so high efficacy?” He also said with a smile: “To treat chronic diseases, in addition to recognizing the essence of the disease first, and then identifying the evidence accurately and dispensing the prescription appropriately, ‘keeping the prescription’ should be considered the first important thing. ” Since then, I understand that “there is a prescription”, but also “keep the prescription”, the treatment of chronic diseases, more able to grasp the proportion, and get some achievements. In recent years, working at the Institute of Chinese Medicine, I saw Dr. Pu Fu-chou treating a patient with a “habitual” cold, who had a runny nose, sneezing, bad wind all over his body, open and close fever, and other chronic illnesses. Dr. Pu first treated his “habitual” cold, prescribing Yu Ping Feng San, a total of nine taels, crushed into coarse powder, divided into 30 packets, one packet per day, water decoction, divided into two times a day to take, after a month the patient felt better, and prescribed a material for him to continue to take, two months later, despite the wind and cold, but also no recurrence. Because I recall that I also used Yu Ping Feng San to prevent “habitual” cold, two or three doses of large doses, after taking chest tightness and dry nose, although the cold temporarily stopped, five or seven days again as before. I often think about the reason here, is not the “habitual” cold, belong to the Wei Qi is unable to defend the external evil, to change the physique, it is necessary to change the quantity to reach the quality of change, never a couple of doses of medicine can be collected? Here, Dr. Pu old doctor a small amount of long-term use of Yu Ping Feng San, seems to be easy, but not careful and modest learning, is not able to do. From the above description, it is clear that doctors treating chronic diseases should have both a prescription and a guard in order to receive the desired effect.