基于中国社会状况综合调查（CSS）2017年的数据，利用有序probit模型，考察了城乡居民的互联网使用频率对食品安全风险感知影响的差异性以及政治信任和社会信任的中介效应。研究发现，对于农村居民而言，由于政治信任的中介效应，互联网使用频率的增高带来了更高的食品安全风险感知；相较于农村居民，城市居民的互联网使用频率对其食品安全风险感知的影响并不显著，这主要是由于城市居民互联网使用频率并不影响其政治信任和社会信任。提出政府应努力提高农村居民媒介素养，从源头上加强对互联网的信息管理，努力提高城乡居民的政治信任和社会信任，建设共建共治共享的食品安全治理体系。

Based on the 2017 China Social Survey (CSS) data, this paper examined the differences of the impact of the internet use frequency on the food safety risks perceived by consumers between urban and rural residents and the mediating effects of political trust and social trust with the Ordered Probit Model. The study found that the intermediary effect of political trust, the higher internet usage frequency of rural residents had brought higher food safety risk perception. However, the internet usage frequency of urban residents had no significant impact on their food safety risk perception, mainly because the internet usage frequency did not affect political and social trust for urban residents. To sum up, in the management of food safety risks perceived subjectively by residents, it is better to take measures according to the urban-rural differences based on the mediating effects of political trust and social trust.

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