The clinical manifestations of digestive system diseases, in addition to symptoms and signs of the digestive system itself, are often accompanied by symptoms of other systems or systemic symptoms, and in some cases, symptoms of other systems may be more prominent. Common diseases include gastroesophageal reflux disease, peptic ulcer, inflammatory bowel disease, cholelithiasis, among ten other types, as well as infectious diseases such as acute gastroenteritis, which peak in summer. Diagnosis and treatment require a comprehensive analysis through medical history collection, physical examination, routine laboratory tests, and auxiliary examinations such as endoscopic imaging. Treatment methods include proton pump inhibitors and endoscopic submucosal dissection, among others. Electronic gastrointestinal endoscopy improves the early detection rate of gastrointestinal tumors.