In addition to the common bacterial and viral infections, fungal infections are also very common. In recent years, due to the widespread use of broad-spectrum antibacterial drugs, glucocorticoids, cytotoxic drugs, immunosuppressants, the development of organ transplantation, and the increase of AIDS patients, there is a significant trend of increasing the number of pulmonary fungal patients. The common fungi are Candida pneumoniae, Aspergillus pneumoniae and Cryptococcus pneumoniae. After infection with these fungi, patients may develop high fever, wheezing, shortness of breath, fatigue, night sweats, dyspnea, and even hemoptysis. For the treatment of fungal infections, the commonly used drugs are amphotericin B, voriconazole, itraconazole, caspofungin, etc.