The mid-concave prone position, also known as the shock position, is at an angle of 20-30° upward elevation of the head and chest, and 10-15° upward elevation of the lower limbs, the main purpose of which is to ensure the blood supply of important organs, such as the heart and kidneys. Upper body elevation is conducive to respiration, because the patient’s breathing may not be very smooth after lying down, and lower limb elevation is conducive to returning blood from the lower limb vessels to the heart, increasing the volume of return blood, which is conducive to resuscitation. Shock position is especially suitable for hemorrhagic shock, or insufficient blood volume of patients, but also can be used in the patient’s infectious shock resuscitation. Patients in shock, liquid resuscitation, before the use of shock position, to ensure the blood supply of vital organs, and then liquid resuscitation.