Children, teenagers, women, patients with chronic diseases, the elderly, the disabled, etc. Health education takes the community as the unit and the community population as the object, which refers to the disadvantaged groups. The key groups are children, teenagers, women, patients with chronic diseases, the elderly and the disabled. Health education refers to enhancing people's awareness and ability of self-care through planned, organized and systematic educational activities, so that people can consciously adopt healthy behaviors and lifestyles.