Pressure injury refers to the local tissue of the body due to long-term compression, ischemia and hypoxia, which may eventually lead to necrosis of the tissue area. For people at high risk of pressure injury, they need to be turned once every 1-2 hours, and after turning, they need to observe whether there is edema and redness in the area of compression and skin, and pay attention to avoid dragging with excessive force when turning the patient to prevent skin damage. If the patient is incontinent, it is necessary to wash the perineal area in time after each defecation to avoid skin irritation by feces and urine.