The center-concave position is mainly applied to some shock patients, and is also a more commonly used resuscitation measure. The specific operation of the mid-concave position is to elevate the patient’s head and chest at an angle of about 10-20 degrees, which helps to keep the respiratory tract open; elevate the lower limbs at an angle of about 20-30 degrees, which is conducive to the return of venous blood to increase the cardiac output of the heart, and further alleviate the symptoms of shock, so the mid-concave position is suitable for patients in shock. Shock is a series of symptoms caused by the rapid reduction of effective blood volume or insufficient perfusion due to various reasons. Elevating the patient’s head and chest can cause the diaphragm to drop, which is more conducive to breathing; elevating the lower limbs increases the amount of return blood, which is conducive to ensuring the blood supply to other vital organs. For patients with shock, standardized rescue treatment must be carried out under the guidance of doctors.