There are many gastrointestinal disorders, and sinus stenosis is one of them, but it is often overlooked because the symptoms are not obvious. However, if there are some typical symptoms, they can be examined accordingly. USG and CT are of special significance in understanding the internal structure of gastrointestinal tumors, the degree of infiltration and metastasis of the gastrointestinal wall. The combined application of these methods can provide a strong basis for the classification of the stage of gastrointestinal tumors and the determination of the treatment plan. It can provide a strong basis. Angiography is used for the examination and intervention of gastrointestinal vascular diseases, gastrointestinal bleeding, and also has some value in the diagnosis of small intestinal tumors. MRI has less value in the diagnosis of gastrointestinal diseases. The identification of gastric sinus stenosis is a practical problem frequently encountered in radiological work. It is a more common X-ray sign.