Endoscopy is mainly an examination of cavity organs or tissues. Many systems of the body can be examined by endoscopy, such as the digestive system, respiratory system, urinary system, and female reproductive system. 1. Digestive system endoscopy mainly examines the esophagus and gastrointestinal tract for lesions. 2. Respiratory endoscopy examines the trachea, bronchial tubes, and lung cavities for lesions. 3. Urologic endoscopy is mainly to check the bladder, ureter, kidney and other related diseases. 4. Female reproductive system endoscopy includes examination of the endometrium, cervix, vagina and other parts of the uterus. If there are uncomfortable symptoms, you need to consult a professional doctor in time to carry out the relevant examination, to determine which area of the cause of the symptomatic treatment, to avoid delays in the condition.