深部真菌感染是临床各科严重并发症之一。近年来随着广谱抗生素、皮质激素、免疫抑制剂等大量应用；深部静脉高营养方法与静脉、气管插管、器官移植的广泛开展；加之糖尿病、恶性肿瘤、爱滋病等一些慢性消耗性疾病所造成的免疫抑制或免疫缺陷患者的增加，使因机体内菌群失调、 Deep fungal infection is one of the serious complications in clinical departments. In recent years, with a large number of applications such as broad-spectrum antibiotics, corticosteroids, immunosuppressive agents, etc.; extensive deep vein nutrition methods and intravenous, tracheal intubation, and organ transplants; and diabetes, malignant tumors, AIDS and other chronic wasting diseases. The resulting increase in immunosuppression or immunodeficiency causes dysbacteriosis in the body.