Clinically, for mild gastrointestinal bleeding, first, the patient’s vital signs should be monitored and then actively treated with fluid replacement and volume expansion. The patient’s water-electrolyte balance disorder and acid-base metabolic imbalance should be adjusted. Along with these treatments, the patient should also be placed a gastrointestinal decompression tube, which is clinically known as a gastric tube, which is very helpful in determining the patient’s upper gastrointestinal bleeding. If the patient’s general condition allows, gastroscopy and enteroscopy can be done to determine the patient’s specific bleeding point, and if appropriate, the patient can be treated under gastroscopy or enteroscopy to stop the bleeding. In addition, if the patient is bleeding from the small intestine and cannot be reached by gastroscopy or colonoscopy, an arterial angiogram can be done to determine the exact site of bleeding and, if necessary, embolization can be performed. If the patient’s gastrointestinal bleeding is mild at the beginning, and there is active bleeding, or even a tendency for the amount and rate of bleeding to expand, surgical treatment should be performed.