Under the guidance of Traditional Chinese Medicine (TCM) theory, our daily food is not only used to satisfy hunger and maintain health, but it also plays a role in preventing and treating diseases, as well as promoting body recovery and delaying aging. Today, we will discuss this issue from the perspective of TCM.The lifestyle of humans plays an increasingly important role in health and medical care, with the relationship between the two becoming ever closer. As an important part of lifestyle, the study of TCM dietary nutrition includes two major parts: basic theory and daily application. Based on records in historical documents and actual clinical situations, it generally encompasses four aspects: dietary health preservation, dietary treatment, dietary moderation, and dietary dos and don’ts.The function of dietary consumption is not only reflected in maintaining the normal life activities of the human body, but it also has a nourishing effect, which is different from the viewpoint of modern nutrition science.