Ultrasound endoscopy is generally the same as conventional endoscopy precautions, the most important point is fasting water, at least fasting 6h, water 4h; second, if the patient has a history of medication, to provide detailed medication to the doctor on the day of the examination, there are some special drugs in advance need to stop, or to do the temporary treatment; third, the patient to do ultrasound endoscopy, must remember to do endoscopic examination before the Thirdly, when the patient undergoes ultrasound endoscopy, he must remember to bring all the information of previous endoscopy. The doctor who does ultrasound endoscopy should judge the situation of the equipment used in the next ultrasound endoscopy through the previous examination results, including the degree of difficulty of the operation, and do the preoperative assessment; fourth, if the patient has other examinations on the day of the examination, for example, abdominal organs surface ultrasound, it is recommended that the patient should do the ultrasound of the body’s surface organs first, and then do the ultrasound endoscopy. The above content is for reference only, specific medication, treatment, please refer to the doctor’s interview.