Gastroscopy can also detect diseases when the stomach does not hurt. 1. Gastroscopy is a common medical examination method, usually when the stomach does not hurt, gastroscopy can also detect related diseases. The absence of stomach pain does not mean that there is no lesion in the stomach. Gastroparesis is merely a spasmodic pain caused by stimulation of the gastric nerve or gastric mucosa. 2. Through gastroscopy, the lesions of the esophagus, stomach and duodenum can be directly observed, especially small lesions, benign and malignant tumors of the upper gastrointestinal tract, etc., which can clearly diagnose whether the esophagus, stomach and duodenum are edematous, congested, ulcerated, and redundant, which is more conducive to diagnosis of the disease. Clinically, it is often used to check gastric ulcer, duodenal ulcer, acute and chronic gastritis, reflux esophagitis and other diseases. If the gastroscopy examination finds that there are suspicious lesions locally, it is recommended to improve the pathological biopsy and cytological examination, and the comprehensive results of the examination under the guidance of the physician to clarify the cause of the disease.