Symptoms of psittacosis mainly include fever, cough, muscle aches and pains, and delirium and coma may occur in severe cases. Psittacosis is a respiratory disease caused by Chlamydia psittaci infection, and the clinical symptoms are mainly systemic and respiratory symptoms, while severe patients may have central nervous system symptoms. Psittacosis systemic symptoms will appear fever, usually manifested as a sudden high fever, body temperature up to 39 ℃ to 40 ℃, at the same time there is fatigue, nausea, vomiting, muscle aches and pains and other symptoms. Respiratory symptoms will mainly appear sore throat, cough, mainly dry cough, certain patients may even have chest pain, dyspnea. Patients with severe psittacosis may also experience central nervous system symptoms such as irritability, coma, and delirium. Psittacosis needs to be treated aggressively in the hospital to avoid delays.