Broken arterial and venous vessels do not repair themselves, while broken capillaries can repair themselves. The broken capillaries can be repaired automatically, but the broken veins can form thrombus in the veins and cause the occlusion of the blood vessels, which can not be repaired automatically and need to be treated by surgery. At the same time, a broken arterial blood vessel will lead to insufficient blood supply to the distal tissues and organs, resulting in symptoms of tissue ischemia and necrosis, and at the same time, it will allow a large amount of blood to flow to the surrounding tissues, which will cause the patient to experience a large amount of blood loss within a short period of time, resulting in the symptoms of hemorrhagic shock, and it is necessary to do surgery to control the flow of blood. However, capillaries are relatively small blood vessels in the human body, and once a capillary rupture occurs, it is generally possible to recover. Note that ruptured blood vessels should be treated promptly if the situation is serious, under the guidance of a doctor.