Stomach bleeding is fainting, and stomach bleeding has different clinical manifestations depending on the amount of bleeding. Normally, if the bleeding volume is 5 ml, it can appear positive by testing fecal occult blood, and if it is more than 50 ml, the digestive tract can discharge black stool manifestations. If the bleeding volume is 250ml at a time, the patient can show the typical manifestation of gastrointestinal bleeding, i.e. vomiting blood and black stool. If the blood loss continues to increase in a short period of time and exceeds about 800ml, the patient can show obvious dizziness, panic, weakness, cold sweat, or even fainting, which is manifested as serious gastrointestinal bleeding at this time, and the patient may have shock condition, triggering abnormal vital signs and even The patient’s life may be threatened. Therefore, depending on the amount of bleeding, gastric bleeding can have different serious reactions and can even threaten the patient’s life. In case of vomiting blood and black stool, or even with dizziness and darkness, patients are advised to go to the hospital immediately for symptomatic treatment.