As long as enough pressure is applied and lasts long enough, pressure ulcers can occur at any site, but they are mainly located in areas where bony prominences are easily pressurized. Different body positions have different occurrence sites, such as supine position in the occiput, scapula, spine, sacrococcygeal, heel, etc.; lateral position in the shoulders, hips, lateral knee joints, ankle joints; sitting position is most likely to occur in the two sides of the sciatica nodes, so the lateral position can be maintained at a certain angle. Once the skin is found to be reddened, blackened and broken, it can no longer continue to be pressurized, and soft cushions can be used to reduce the pressure, and if necessary, it is necessary to go to the hospital in a timely manner or consult a doctor for local treatment. Pressure sores, as the name suggests, are injuries to the skin and subcutaneous tissues that occur when blood circulation is affected by localized pressure on the body. Pressure ulcers are mainly found in people who are bedridden, paraplegic or comatose, such as the elderly who are disabled and mentally retarded at home, and who are bedridden for long periods of time because they can’t move on their own and can’t turn over. Pressure ulcers may also occur in paraplegic patients who are bedridden or wheelchair-bound for long periods of time after thoracic and lumbar spine fractures, as well as those who need to be bedridden after various types of fractures. Prevention of pressure ulcers is most important, mainly by turning over frequently and placing soft pads and local massages on the pressurized areas.