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Microplastics are ubiquitous and have been found in marine environments, organisms, salt, and even human bodies. Concern about the impact of microplastics on the ecological environment, as well as the threat of microplastics to food safety and public health is increasing among the society. However, there is currently no effective technical way to tackle and remove microplastics from the environment. Thus, public attitudes are key to reducing microplastic emissions. This study investigated the public's perceptions and attitudes towards microplastics in Shanghai and used an ordered regression model to explore the public's willingness to reduce microplastics and its influencing factors. We used random face-to-face interviews to complete a total of 437 valid questionnaires. The survey results show that only 26% of the respondents had heard of microplastics before the survey, and the majority were relatively …