Health literacy refers to the ability of individuals to obtain and understand health information and use this information to maintain and promote their own health. Health literacy includes knowledge level and ability level. The knowledge level is basic health knowledge and skills; The ability level is health information literacy.

Health information literacy refers to people's ability to acquire, understand, identify and apply health information, and health information literacy is the core of health literacy. Residents with good health information literacy can acquire more knowledge of disease prevention and control through various channels and develop a healthy lifestyle; Residents with good health information literacy can better communicate with doctors and actively cooperate with doctors when seeking medical treatment, thus effectively alleviating the contradiction between doctors and patients and improving the treatment effect; In addition, good health literacy can greatly improve the public's self-protection ability, thus playing an important role in responding to public health emergencies.