Fungal pneumonia may not have any obvious clinical features in its early stages or may only have mild cough and sputum, and the symptoms are sometimes confused with bronchitis and other lung infections. Since the course of fungal pneumonia is slow, failure to use targeted antifungal medications can lead to increasingly severe clinical symptoms in patients with more intense cough, fever, and shortness of breath. Early diagnosis is very meaningful for patients with fungal pneumonia, so that appropriate antifungal drugs can be selected and sensitive drugs can be chosen for treatment based on the bacterial culture and drug sensitivity results of the fungus. For patients who use antibiotics and glucocorticoids for a long time, they should be alert to the occurrence of fungal pneumonia or other fungal infectious diseases.