Poor functioning of the spleen and stomach can be seen in a variety of clinical symptoms such as abdominal distension, abdominal pain, loss of appetite, nausea, vomiting, etc. It is not limited to the 5 major symptoms, and there is no such thing as the 5 major symptoms. Spleen and stomach belong to the middle jiao and have the relationship with each other. Spleen is the source of qi and blood biochemistry and has the effect of transporting and transforming water and grains, while the stomach has the effect of putrefying (initially digesting the food and forming the food waste) and accepting (accepting and accommodating) water and grains, and a variety of clinical symptoms can appear when the physiological functions of the spleen and the stomach are abnormal. When the physiological functions of the spleen and stomach are abnormal, the spleen’s function of clearing and the stomach’s function of putrefaction will be impaired, and common symptoms include gastric distension or abdominal pain, reduced diet, nausea and vomiting, belching (hiccups) and hiccups, loose stools and other discomforts. When clinical symptoms of spleen and stomach problems occur, it is recommended to seek medical treatment as soon as possible.