Cavernous decubitus ulcers are one of the manifestations of decubitus ulcers. Most of them are caused by improper initial care, resulting in deepening of the trauma to form a subcutaneous cavity, or poor healing in the later recovery process, resulting in a cavernous wound. 1. Care methods for cavernous decubitus ulcers ① If the cavity is clean and free of exuding necrosis, it can be cleaned directly with saline, then gauze strips or drainage strips can be cut and evenly stained with decubitus ulcer cream to make oiled gauze strips to fill the cavity; ② If there is internal necrosis, surgical instruments are needed to clear the wound and remove the rotting flesh and old granulation from the bottom, then external care with decubitus ulcer cream and gauze strips can be used to promote the growth of granulation in the cavity. Granulation growth. 2.Surgical treatment of cavities For cavity-type decubitus ulcers that do not touch bone tissue, closed negative pressure drainage therapy can be used according to the situation. Creating a negative pressure environment for the trauma surface through a negative pressure device to promote the discharge of exudate out of the body while forcing the cavity to close can speed up the healing rate inside the cavity, and the healing cycle of the trauma surface can be shortened by combining surgical suturing or skin pulling and other therapies in the late recovery period. 3. Treatment of deep cavities For deep cavities or cavities that do not heal for a long period of time, it is necessary to consider surgical reopening methods to transform semi-closed wounds into completely open wounds, which can eliminate old lesions despite the enlargement of the trauma surface and make it easier to recover according to conventional decubitus ulcer treatment methods after turning into fresh wounds.