全面抗战爆发后，北大、清华、南开三校迫于形势内迁，并在昆明组建而成西南联合大学。联大学生在生活的苦难与压力以及各方救济无力的情形下，为维持生活与学业，只得被迫从事一系列社会“兼差”。“兼差”活动是联大学生日常生活的重要组成部分，从中可以管窥全面抗战时期大后方数以万计贫困学生群体的生活实态。文章通过对联大校史资料、校友回忆录、联大时人日记等材料的挖掘与分析，深入探析西南联大学生“兼差”自救的类型及影响，旨在深化西南联大相关研究。

After the outbreak of the whole-nation resistance war against Japanese aggression, Peking University, Tsinghua University, and Nankai University were forced to relocate and formed the Southwest Associated University in Kunming. Faced with life hardships and pressures, as well as inadequate relief from various sources, the students of the Associated University had no choice but to engage in a series of social "part-time jobs" to sustain their livelihood and academic pursuits. These "part-time jobs" were a crucial part of the daily lives of the students, and could provide a glimpse into the living conditions of tens of thousands of impoverished students in the rear areas during the whole-nation resistance war. By sorting and analyzing materials such as the university's historical records, alumni memoirs, and diaries of contemporaries, this study delves into the types and impacts of the selfhelp "part-time jobs" undertaken by the students of the Southwest Associated University, thereby contributing to the research on the Southwest Associated University.