In the clinic, we often hear some patients say, “I will go to drink Chinese medicine when I finish chemotherapy or radiotherapy”. In fact, this perception is not correct. When is it more appropriate to start TCM treatment in the treatment process of colorectal cancer, gastric cancer and other gastrointestinal malignant tumor patients? In our opinion, the earlier the TCM treatment intervention, the better. After surgical removal of tumor lesions, when the intestinal function is basically recovered, you can consider starting to take Chinese medicine. Generally speaking, patients with normal exhaust and defecation can take liquid food or semi-liquid food, including traditional Chinese medicine, and their intestines can already absorb the effective ingredients of traditional Chinese medicine. At this time, treatment with traditional Chinese medicine can speed up the recovery process of patients after surgery, help to enhance the immune function of patients and ensure that radiotherapy is carried out normally on time.