Functional dyspepsia has no obvious organic lesions clinically, and most patients do not have serious consequences. Its hazards are mainly the following: 1. It may hide other organic lesions, such as gastric cancer; it may also suffer from other diseases, such as hypothyroidism; 2. Long-term dyspepsia may cause malnutrition and cause other diseases. Functional dyspepsia is the initial symptom of all digestive tract diseases, timely detection and treatment can effectively control the disease to a minimum.