If there is bleeding and blood loss due to wounds on the body, if there is excessive bleeding and blood loss is more serious, the dizziness symptoms that appear need to be focused on the anemia that may be caused by blood loss, too much blood loss will cause too little blood in the blood vessels, blood volume decreases and cause hemorrhagic anemia. When the blood loss is greater than 1000 ml, the patient will experience more obvious dizziness, weakness in the limbs, a drop in body temperature, and a much lower spirit than before. The dizziness is mainly drowsy. Due to the insufficient local blood supply caused by blood loss anemia, the functional cells in the corresponding trophoblastic area are all in a state of ischemia and hypoxia, causing a decrease in the functions of the brain and the balance organs, the first one being that the balance function will be dizzy, unstable, depressed or even fallen.