As a crucial constituent of the discourse of Model Workers spirit, the Justice and Benefit Discourse displays the value orientation of the whole Model Worker group. Based on the oral texts of Model Workers and aided by corpus-based discourse analysis, this paper probes into the Justice and Benefit Discourse themed “Poverty Discourse”,“Striving Discourse”,“Wealth Discourse”and “Devotion Discourse”,and finds the connotation of Justice and Benefits as below:from “justice and benefit at self-centered level”to “justice and benefit have been upgraded from self-centered to collective level”,and finally to “mutual emphasis on justice and benefit at collective level”and “unity of justice and benefit”. This corpus-aided discourse analysis of Model Workers oral texts is expected to propose new thinking and approaches for studies on social practice and discourse.