Decubitus ulcers can be sterilized with hydrogen peroxide, but long-term use is not recommended, and the use of the process should be step-by-step, sequential care. Decubitus ulcers occur mostly on bedridden patients who have been sick for a long time, mainly due to long-term pressure on the skin and immobilization resulting in hypoxia and ischemia, which causes local infection and inflammation of the skin, coupled with bacterial infections such as sweat and urine, resulting in more and more serious ulcers. Decubitus ulcers should be cared for by first rinsing the site with saline, then disinfecting it with hydrogen peroxide, and at the same time removing the ulcerated and necrotic skin tissues, and then sterilizing the site of the ulcer with iodophor, and then applying medicinal ointment to the skin after it has dried out. Patients with fluid exudation should be cared for diligently to keep the traumatized area dry.