Mycoplasma infections in children are by far the most common respiratory diseases, such as mycoplasma pneumonia. The general treatment using drugs need more than two consecutive weeks, choose macrolide drug treatment mainly, for example, choose erythromycin treatment after more than two weeks can be reviewed. Azithromycin is usually used for 3 days, stopped for 3 days, and then continued for 3 days, following this regular course of treatment up to two weeks. After two weeks, repeat blood tests and chest X-ray or lung CT to detect the titer level of Mycoplasma pneumoniae IgM in the plasma, which is not very meaningful to determine the degree of virus recovery.