The sense of gain in anti-corruption work is an important indicator to measure the effectiveness of anti-corruption work, and has an important impact on the "credibility" of the government. Related issues have become the research focus of related disciplines such as politics and administration, but the existing research does not pay enough attention to the differential impact of the internal and external structural characteristics of social public individuals. In view of this, the paper studies the mechanism of its impact on the sense of gain in anti-corruption work from the dual perspectives of public external political participation and internal socio-economic status. Based on the comprehensive survey data of China's social situation, it is found that there is a significant positive correlation between the public's socio-economic status and their sense of gain in anti-corruption work; People's institutional political participation has a significant positive impact on people's sense of gain in anti-corruption work, and plays an incomplete intermediary effect in the process of people's socio-economic status affecting their sense of anti-corruption acquisition; Non institutional political participation can inhibit  people's sense of gain in anti-corruption work. Therefore, in order to further enhance the people's sense of access to anti-corruption, it is urgent to innovate and improve the people's political participation system, dredge group behavior actively; Meanwhile, strengthen grass-roots corruption governance, and strive to improve people's sense of gain in anti-corruption work.