Micafungin is mainly used for the treatment of esophageal Candida infections and for the prophylactic treatment of bone marrow transplantation and neutropenia. Micafungin is mostly distributed in the liver and kidneys and spleen, and its application in large quantities may cause damage to the relevant organs, so it should always be applied under the guidance of a doctor. If there is a drop in blood pressure, oral discomfort, difficulty in breathing and flushing of the face, edema or urticaria on the body, the relevant treatment should be actively carried out to reduce complications to a minimum level and prevent the development of respiratory disorders that may cause life-threatening conditions. Micafungin, as an antifungal drug, is very effective, but should be applied under the guidance of a doctor.