Pediatric mycoplasma infection cough how long can be good, and the severity of the disease, the physical condition of the child and so on, can not be generalized. Pediatric mycoplasma infection is mainly manifested as a cough, if the child is mild, after the onset of the disease can be given timely and adequate amount of anti-mycoplasma infection treatment, the symptoms will be relieved faster, generally after 10-14 days of treatment, the cough can basically be relieved. However, some children may have high fever, which may last for 1-3 weeks. Chest radiographs of such children may show extensive lung inflammation, accompanied by pleural and pleural effusion changes, and the inflammation absorption time is usually longer, so that the cough lasts for a longer period of time, even for 3-6 months. During the period of illness, children need to pay attention to nutritional supplements, drink plenty of water, increase immunity, and pay attention to warmth, avoiding cold, in order to prevent aggravation of the disease.