The role of painless gastroenteroscopy can play a role in screening diseases, confirming the diagnosis of diseases and treating diseases. 1. Screening for diseases: Painless gastroenteroscopy can be used to screen the digestive tract for foreign bodies, ulcers, bleeding, perforation and other diseases. 2. Diagnose diseases: If there is any abnormality in the screening, tissue biopsy can be used for further pathological examination to determine the type of disease. 3. Treatment of diseases: If bleeding spots or polyps are found, painless gastroenteroscopy can be used to stop bleeding and remove polyps. If patients have gastrointestinal diseases, they need to go to the hospital in time for the corresponding examination, and follow the doctor’s instructions to take appropriate treatment measures.