Decubitus ulcers can be disinfected with hydrogen peroxide, but long-term use is not recommended, and the process of using it should be done with step-by-step, sequential care. Decubitus ulcers mostly occur in patients who have been bedridden for a long time, mainly due to long-term pressure on the skin that does not move, resulting in localized skin infection and inflammation, plus bacterial infection from sweat and urine, resulting in increasingly serious ulcers. The care method for bedsores should be to first rinse the bedsore area with saline, then disinfect it with hydrogen peroxide, and remove the ulcerated and necrotic skin tissue, then sterilize the bedsore area with iodophor, and then apply ointment to the skin after drying. Patients with fluid exudation should be cared for diligently and the trauma site should be kept dry.