葡萄球菌是最常见的化脓性球菌,在自然界分布极广,人的皮肤和与外界相通的管腔也有很多这种细菌。但大部分不致病,只有一部分致病。当人的皮肤或粘膜受伤时,可引起伤口感染。葡萄球菌在皮肤表面可生存很久,常隐藏在毛囊、汗腺及皮脂腺内。因此在注射、手术和接生时,如不严格消毒,常易引起化脓性感染。葡萄球菌是圆形、球状细菌,常堆集成葡萄状, Staphylococcus aureus is the most common pyogenic bacteria, widely distributed in nature, there are many such bacteria in the human skin and the lumen that communicates with the outside world. But most do not cause disease, only part of the disease. When people’s skin or mucous membrane is injured, can cause wound infection. Staphylococcus aureus in the skin surface can survive for a long time, often hidden in the hair follicles, sweat glands and sebaceous glands. Therefore, injection, surgery and delivery, if not strictly sterilized, often lead to purulent infection. Staphylococcus aureus is round, globular bacteria, often heap integrated grapes,