Children’s cough chlamydia infection may be caused by droplet transmission, mother-to-child transmission, contact transmission and other reasons. 1. droplet transmission: children cough chlamydia infection may be chlamydia pneumonia, belongs to the respiratory system of infectious diseases, through the respiratory droplet transmission, children close contact with other patients, pathogens with respiratory droplets into the lungs, triggered by chlamydia pneumonia, the child showed fever, sore throat, hoarse voice, cough and other symptoms. 2. Mother-to-child transmission: Pregnant women suffering from chlamydia infection, vaginal delivery of newborns may be infected with chlamydia, showing symptoms of cough. 3. Transmission through contact: Some items used by the patient, such as towels and toys, are contaminated with secretions, and other children may become infected when they come into contact with or use them. Children cough chlamydia infection may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.