This lecture aims to acquaint students with the basics of hygiene for children and teenagers, addressing major hygienic problems in this area, and discussing the organization of health services for children and teenagers. It provides a general overview of health indicators for children and teenagers in Uzbekistan, emphasizing the importance of hygienic conditions for their education and training. The concept of hygiene for children and teenagers (HCT) is explained, including its purposes, challenges, and modern issues within the context of the republic.