Mycoplasma pneumonia has the following characteristics: 1. epidemiological characteristics, as Mycoplasma pneumoniae can be transmitted through the respiratory tract, droplets, so it is somewhat infectious. 2. clinical characteristics, clinical symptoms are relatively mild, imaging manifestations are obvious and pulmonary signs are relatively few, extra-pulmonary complications are more frequent compared to other pneumonia. The most common symptoms are persistent, irritating dry cough, extra-pulmonary symptoms are often rash, gastroenteritis, myocarditis, serious liver function damage and meningitis, encephalitis, etc. 3, treatment characteristics, Mycoplasma pneumoniae pneumonia without obvious cell wall, to penicillin, cephalosporin antibiotics are ineffective, clinical usually choose macrolides, tetracyclines, fluoroquinolone antibiotics anti-infective treatment, the course of treatment The course of treatment is usually 10-14 days. The overall prognosis for mycoplasma pneumonia is good.