Common causes of pediatric sinus bradycardia include the following: 1, healthy children, athletes; 2, Ketin’s disease, typhoid fever, etc.; 3, intracranial pressure increase diseases: cerebral hemorrhage, brain tumor, tuberculous meningitis; 4, taking digitalis or reserpine type drugs. So first of all, it is still necessary to clarify the cause, if it is just simple bradycardia, the child has no other symptoms, no treatment is needed, parents can be explained to eliminate tension; if the bradycardia is caused by disease, the original disease should be treated first, and if it causes insufficient cardiac output needs to be treated in a timely manner.