Acute bronchitis in childhood is one of the most common respiratory diseases. The disease affects all childhood age periods, being more severe in younger and premature children. It can be a reason for the development of respiratory failure and chronic lung pathology. Despite advances in microbiological and virological diagnostics and therapy, the disease continues to be a diagnostic and therapeutic challenge.The book describes the main etiological factors of acute and chronic bronchitis in childhood, the differences in the clinical symptoms and age characteristics in children. An important place is devoted to new therapeutic practices and preventive solutions.