In the context of highly modernized and media-oriented life,the public's attention to the body reflects a trend towards individualization of the body,and the impact of media use on body attitudes is becoming increasingly significant.Research has shown that there is a close relationship between media exposure and body image attention.The active participation of the audience in social media needs to be considered.The use of social media often exacerbates public anxiety about their physique and body.Knowledge factors may be a positive factor for the public to resist the negative impact of social media on individual body perceptions.The use of the knowledge attitude paradigm to study the relationship between individual physical knowledge and physical satisfaction is a supplement to the traditional research paradigm of scientific communication.It is necessary to use social media and knowledge as variables and refine them,construct a theoretical model based on the general public's attitudes towards the body,and make recommendations on body image and behavior.