Decubitus ulcer is a disease that causes tissue ulceration and necrosis due to long-term pressure on local tissues and the occurrence of continuous ischemia, hypoxia, and malnutrition. If treatment is not carried out in a timely manner, it is more harmful to the human body, and common hazards include affecting quality of life, damaging skin and deep tissues, and inducing sepsis, osteomyelitis, hypoproteinemia, and aggravating primary diseases, as follows: 1. Local pain, limb numbness and other uncomfortable symptoms, coupled with long-term bed rest or semi-recumbency, can lead to a significant decline in quality of life; 2, skin and deep tissue damage: if the treatment of decubitus ulcers is inappropriate, it will continue to develop seriously, and ischemic necrosis of the subcutaneous fat layer and muscle tissue may occur; 3, inducing sepsis: if the necrotic tissue of decubitus ulcers is not completely cleared, it is easy to cause concurrent infection of the traumatic tissue, which can manifest as high fever, appetite 4, induced osteomyelitis: when the bed sore infected traumatic tissue to bone tissue invasion, can lead to bone destruction, bacteria and toxins long-term presence, can cause osteomyelitis, osteonecrosis, myelitis, etc.. Acute osteomyelitis can start with high fever and local pain, and when it turns into chronic osteomyelitis, there will be ulceration, pus flow, dead bone or cavity formation, endangering the patient’s life; 5. hypoproteinemia: another hazard of bedsores is that they lead to hypoproteinemia, and patients can develop generalized tissue edema and oozing from the ulcerated surface of bedsores, making the tissue ischemic and recovery time slower and longer; 6. aggravating the primary disease: if the patient is also suffering from heart, lung, liver, etc. If the patient also suffers from diseases in the heart, lungs, liver, etc., the above organ dysfunction can be aggravated, the lighter the acid-base balance imbalance, electrolyte disorders, the heavier there is even liver failure, heart failure, sudden cardiovascular and cerebrovascular accidents and other hazards.