Pus moss is a secretion produced by white blood cells after phagocytosis of viral bacteria attached to the surface of ulcers or tissues as necrotic tissue. Abscess moss not only affects the patient’s appearance, but can have very serious consequences if left untreated. Pustular moss can occur not only in adults, but also in children. The treatment process is also complicated and takes a long time, so it is especially important to prevent the production of pustular moss, which can control the disease and shorten the treatment time once it is found and treated in time. Preventive measures: 1, actively control the primary disease, such as blood sugar control in diabetic patients. 2, for the environment with damage, should do a good job of skin protection or away from the stimulating environment, such as cold attention to the skin warmth, to prevent the occurrence of frostbite. 3.Regular care of the skin, for patients who are bedridden for a long time, pay attention to turning and patting the back, and local skin care to prevent the occurrence of bedsores. 4.Early detection and early treatment. Prevent skin cancer disease.