Pressure ulcers can be roughly divided into the blood erythema stage, inflammatory infiltration stage, shallow ulceration stage, necrotic ulceration stage, the clinical manifestations of each stage are slightly different, nursing care pay attention to more turn over. 1. Siltation and erythema stage: redness, swelling, heat, pain and numbness at the pressure ulcer, there will be localized erythema, and the pressure will not fade. 2. Inflammatory infiltration stage: there will be shallow ulcers formed on the wounds, pink wounds, and there will be blisters, hard knots, pain and so on. 3. Shallow ulcer stage: there will be obvious epidermal breakage, ulcer formation, and even subcutaneous fat can be seen, and there may also be muscle decay and foul odor. 4. Necrotic ulcer stage: the damage of pressure ulcers has invaded the subcutaneous, dermal and muscular layers and even bones, muscles and tendons can be seen. Nursing care for pressure ulcers should pay attention to not keep the same position for a long time, more activities, turn over, massage, you can use a waterbed and other softer pads. The fundamental purpose of care is to avoid localized time pressure.