When encountering a patient with hemorrhage: 1. Assess. If the patient presents with pallor, clammy and cold skin, palpitations, weakness, increased heart rate, and decreased blood pressure, this is a sign that the bleeding volume has reached at least 20% of the circulating blood volume and requires urgent life-saving treatment. 2. Establish intravenous fluid lines. At least two peripheral venous fluid lines should be established to facilitate rapid blood transfusion and rehydration. 3.Nuclear blood and blood transfusion. The first thing to be transfused is red blood cells, and if the bleeding is heavy, plasma or even platelets need to be transfused.4. Define the bleeding site and stop it effectively. If it is peripheral superficial arterial or venous bleeding, compression can be used to stop the bleeding and surgical treatment. If the bleeding is visceral, endoscopic or interventional hemostasis is required. 5. Observe the changes in the patient’s vital signs, pay attention to the changes in urine volume, hemoglobin and coagulation index.