The indications of ultrasound gastroscopy are as follows: 1, general gastroscopy found that the esophagus, stomach and duodenum of the bulging lesions, to distinguish the level of origin of the lesion, or general gastroscopy has been biopsied and diagnosed as cancer, to assess the depth of invasion, to assess whether there is no metastatic lymph nodes around the lesion, need to do ultrasound gastroscopy; 2, the lower part of the common bile duct, the head of the pancreas and duodenal papilla near the jugular abdominal area of the lesion Ultrasound gastroscopy is also needed for the examination of small pancreatic lesions, because ultrasound gastroscopy has high resolution and is better than CT and other examinations for the detection and diagnosis of small lesions; 4. Some centers use ultrasound gastroscopy for the examination of gallbladder lesions and part of liver lesions, but it is not the main scope of ultrasound gastroscopy; 5. Ultrasound gastroscopy is guided to carry out the biopsies of puncture, tube placement and even tumor ablation and drainage, and even the ablation of tumors. Drainage, and even ablation of tumors.