The audience's media literacy refers to "the public's ability to choose, understand, question, evaluate, think critically and create and produce media information." . In the process of mass health communication, cultivating and improving the audience's media literacy is the foundation and powerful guarantee to truly realize the mass health communication function.
According to a survey conducted by some researchers, the general tendency of China audience to treat media information is "it seems that all information published in newspapers, radio and television is regarded as authority, and they are not used to making information analysis on its authenticity, objectivity and scientificity, and simply accept it all." . It can be seen that the audience lacks the ability to question and evaluate media information. In order to make the audience have the ability to question and criticize the authenticity of information, we must first let them know the nature and communication process of mass media. Mass communication believes that mass communication is a process in which cultural communication institutions and their professionals spread social information to a large number of different and widely distributed audiences through technical communication media. Economy and so on will affect the gatekeeper of information and decide what kind of information to convey to the audience. (4) Therefore, a healthy mass media audience with media literacy must realize that the information production and dissemination of mass media is not purely objective, and the so-called reality presented to the audience by the media is not the real real world, but the "mimetic environment" created by the media. Media information often contains the personal value orientation of the communicator and does not fully reflect the objective reality. Although China's mass media is state-owned, under the influence of market economy, market standards are becoming more and more important in the information selection of China's mass media. In the past, the audience only saw the publicity and public welfare of the mass media unilaterally (that is, the public services provided by the mass media to meet the social demand for information), believed that the reality of the mass media existed objectively, highly trusted the mass media and the information it disseminated, and ignored the operational nature of the mass media, which might lead to giving up social responsibility in pursuit of ratings and profits. Therefore, the audience blindly believed some health information released by mass media, which appeared.