Pulmonary cryptococcosis is not a specific disease, it is a fungal infectious disease of the lungs caused by Cryptococcus neoformans, which is relatively common in clinical practice. Pulmonary cryptococcosis is caused by Cryptococcus neoformans, which mainly invades the human lungs and central nervous system, and mostly occurs in immunosuppressed patients, which is also a relatively common disease, and does not belong to a special disease. After infection with the bacteria, patients may experience coughing, sputum, low-grade fever, chest pain, night sweats, and weight loss. Complications such as pleural effusion, cryptococcal meningitis, and cryptococcal meningoencephalitis may also occur with more severe lesions. In addition, the disease is mainly transmitted through the respiratory tract and can also enter the body through the skin or the digestive tract and cause disease, so the disease is an infectious disease. It is recommended that patients infected with Cryptococcus, must pay attention to, as soon as possible to go to the regular hospital, with the clinical improvement of the relevant examination, to avoid indiscriminate use of drugs and delay the condition.