1, Gastroscopy the day before a light diet, morning fasting. 2.Please bring the five items of hepatitis B and liver function labs (within six months), and patients older than 60 years old and those with heart disease should bring an electrocardiogram within 2 days. 3.Patients should bring a large roll of toilet paper. 4.Gastroscopy will be performed from Monday to Friday in the morning and colonoscopy in the afternoon. 5.If there is discomfort in the throat after gastroscopy, it is caused by local anesthetic drugs and can disappear on its own in 1-2 days. 6, 1 hour after gastroscopy before eating, with a warm, cool and light liquid diet; patients who have taken a biopsy, please 2 hours before eating, avoid eating hot, hard, indigestible food.