Gastrointestinal bleeding with dizziness may be caused by excessive gastrointestinal bleeding resulting in low blood pressure. Generally, when the amount of gastrointestinal bleeding is greater than 400 milliliters, it may cause the patient’s blood pressure to drop, and dizziness and other signs of insufficient blood supply to the brain. If the bleeding is allowed to progress, it is easy to develop shock, and need to go to the hospital in time. If the amount of bleeding is relatively small, the patient’s condition will gradually improve with hemostasis, rehydration and symptomatic supportive treatment. If the bleeding is more, further surgery is needed to avoid delaying the condition. Avoid drinking alcohol and eating rough and spicy food, and suggest eating light and easy-to-digest food. When the patient has gastrointestinal bleeding with symptoms of dizziness, it is recommended to go to the hospital in time to avoid delaying the condition.