The theory of Sanyuan medicine is that all diseases are caused by poisonous depression and deficiency, so when treating diseases, it is important to unite the three elements and not to be biased. For example, if a patient is admitted with a cough and has solid lung changes, bronchitis, pleural effusion, severe lung infection, and calcified foci in the aorta, treatment should of course focus on relieving wind and heat toxins and treating pulmonary carbuncles. However, it is important to take into account the treatment of depression, including phlegm obstruction and blood stasis. If the patient is cured of lung disease, the patient, as soon as normal, will go home soon and may have heart problems, such as intra-aortic calcification, which may be complicated by thrombus collapse and cause heart infarction and stroke death. Curing blood stasis and stasis toxin and treating yu can provide an additional layer of protection to preserve life, so the treatment of ternary toxin and yu deficiency cannot be biased. The deficiency should also be considered, treating cold toxins, dispersing wind and cold, and strengthening the body to prevent frequent wind and cold viral infections in the future. The key to treating the disease, the three types of toxicity and deficiency, should not be biased. “There are thousands of diseases, but they are not separated from the three elements, what is the three elements? Toxic depression deficiency”.