There is no such thing as whether the stomach is hot or cool, but the stomach has the physiological characteristic of liking moist and hating dryness. The stomach, also known as the gastric epigastric region, is located in the upper part of the abdominal cavity, under the diaphragm, connected to the esophagus upward, connected to the small intestine downward, and connected to the spleen by the membrane. Compared to the spleen, which prefers dryness to dampness, the stomach has the physiological characteristic of preferring moistening to dryness. The stomach is the dry earth of yangming, maintaining normal physiological functions, and needs to be moisturized by yin fluid. The stomach has the function of accepting putrefaction (carrying and digesting food), which not only depends on the promotion of gastric qi, but also requires the moisturizing of the fluid in the stomach, and the maintenance of its function of accepting putrefaction and the characteristic of descending and descending requires the sufficiency of fluid in the stomach. As the stomach is yang-earth, it is easy to be harmed by the evil of dryness and heat in illness, therefore, clinical treatment of diseases emphasizes the protection of the fluid in the stomach. If there is any discomfort, it is recommended to consult a doctor in time and treat under the doctor’s guidance.