Treatment for third-degree bedsores includes cleaning, attention to position changes, topical dressings, topical antiseptics, antibiotics and surgery. In third-degree bedsores, there will be more tissue necrosis at the site of the pressure sore, and the necrotic tissue needs to be removed promptly with a surgical procedure called debridement. If the surgical incision is large or if more tissue is removed and the wound is difficult to heal, a skin graft will be used to cover the wound and promote healing. Third-degree decubitus ulcers can also cause ulcers to develop at the pressure site, and if they become infected, sepsis or cellulitis can develop. At this point, patients need to take antibiotics such as cephalosporins under the supervision of a doctor to treat the infection. After the surgery, pay attention to the cleanliness of the wound, and apply topical antibiotic such as povidone-iodine to prevent and treat the infection at the wound. Be careful to change the position frequently to prevent aggravation of the condition. Wounds can be covered with topical film dressings to ensure that they are clean and free from contamination, and also have the effect of absorbing wound exudate and reducing wound edema. When decubitus ulcers appear, it is necessary to actively consult the doctor and carry out reasonable treatment under the guidance of the physician.