Is it better to be more nutritious during the recovery process of cancer patients? Practice has found that indiscriminate supplementation is a common phenomenon in cancer recovery nowadays, in fact, this method is not only unfavorable to the patient’s recovery, but also affects the patient’s recovery speed. We have treated a patient after lung cancer surgery, who came to us with poor spirit and poor appetite. When asked about the situation, we learned that the patient had many siblings, and after learning that she was sick and operated, they sent people to make various kinds of tonic foods every day, such as chicken soup, fish soup, turtle soup, ginseng soup, etc., and sometimes, they had to eat several kinds of food a day in the hope that her body could be rapidly toned up. However, contrary to expectations, the patient’s appetite is getting worse and worse, and her physical condition has not improved. In fact, this is a widespread phenomenon of blind tonic phenomenon. In fact, our ancestors have long recognized that “deficiency should not be supplemented”, and it is very important for cancer patients to be nourished. In the clinic, there is a view that cancer patients should not take supplements, and if they take more supplements, the cancer cells will grow faster; there is another view that they must take a lot of supplements for fear of not being able to make up for the deficiency. In fact, these two points of view are somewhat radical, cancer patients can ensure the reasonable combination of meals in addition to the correct choice of supplements in a planned manner. For example, many patients are taking American ginseng, but not all cancer patients are suitable, from the clinical point of view, American ginseng is a good product for clear tonic, especially suitable for patients with deficiency of qi and yin combined with deficiency of heat in the late stage of tumor or after surgery, radiotherapy and chemotherapy, which is often manifested as prolonged cough, dryness of mouth and pharynx, heartburn and insomnia, tiredness of limbs and shortness of breath, etc. For patients with deficiency of yang and stomach, there is a lack of stomach, which is often manifested in the symptoms. For tumor patients with insufficient yang qi and cold and damp stomach, western ginseng should be avoided. This kind of patients often show pale face, swollen face and limbs, fear of cold and chills, slow heartbeat, loss of appetite, nausea and vomiting, abdominal pain and distension, loose stools, white tongue, etc. Many patients who have repeated chemotherapy tend to have these symptoms. Therefore, the use of American ginseng for post-chemotherapy patients must pay more attention to supplement other nutrients should also be specifically analyzed to avoid counterproductive.