The symptoms of not being able to eat and wanting to vomit are mainly considered to be caused by diseases of the upper digestive system, with specific disease types such as superficial gastritis, duodenal ulcer, and gastric sinus cancer. This is because inflammation or occupational lesions in the digestive system tissues have a serious impact on the normal function of the digestive tract, resulting in symptoms such as loss of appetite, belching, and early satiety. In addition, the locally damaged tissues are stimulated by gastric acid, which induces contraction and spasm of smooth muscle, and the substances in the stomach reflux to the esophagus and oral cavity under enhanced internal pressure, eventually causing the patient to experience reflex vomiting. However, the possibility of patients developing other systemic diseases such as cerebral obstruction, myocarditis, hypertension, etc. cannot be excluded, as the above disease types can lead to vomiting, functional disorders of central nervous tissue such as body fluids, and cause such adverse symptomatic reactions.