The danger of cryptococcal pneumonia is that it is easy to invade the lungs, invade the central nervous system and other parts of the body. 1. Invasion of the lungs: when the human body is immunocompromised, cryptococcus will enter the human lungs through the respiratory tract and invade the lungs, thus leading to lesions in the lungs. Due to the infiltration of inflammatory secretions, it is easy to irritate the respiratory tract, thus making the patient suffer from coughing, coughing up sputum, hemoptysis, chest pain, dyspnea and other symptoms. Due to the decreasing immunity of the body, cryptococcus may also spread through the blood circulation until the whole body. 2. Invasion of the central nervous system: Because cryptococcus has a strong affinity for the meninges and brain tissues, it is more likely to invade the central nervous system, resulting in meningitis, which may be accompanied by headache and low-grade fever at the beginning. Cryptococcal pneumonia is recommended to go to a specialized hospital for further examination and treatment under the guidance of a doctor after the cause of the disease is clarified.