Lesions of the digestive tract, ulcers, polyps, inflammation, tuberculosis, and tumors, which evolve to involve the blood vessels of the submucosa or rupture of the tumor, leading to the influx of blood into the digestive tract, are clinically known as gastrointestinal bleeding. Diagnostic criteria are mainly determined by laboratory tests, endoscopy and imaging. Since the most common type of bleeding is in the upper gastrointestinal tract, gastroscopy is very visual and facilitates the detection of lesions, ulcers or tumors in the digestive tract, which can be treated with submucosal hemostasis. In addition, C T examination is also available, which can easily detect occupying lesions in the intestinal tract. If it is difficult to confirm the diagnosis, DSA angiography can be chosen to clearly detect the cause of the bleeding, most commonly caused by a ruptured mesenchymal tumor or hemangioma.