The purpose of this study is to examine the current state of job crafting and career commitment of rural primary teachers and to analyze the relationship between the two variables as well as the influencing mechanisms through a questionnaire survey of 2,217 primary school teachers in Liaoning, Yunnan, Chongqing, Guangxi, and Guizhou. The research findings showed that rural primary teachers exhibited a moderate level of capacity for job crafting and career commitment; that job crafting positively predicted career commitment among rural primary teachers; and that teachers' self-efficacy and organizational support played mediating and moderating roles respectively in the relationship between the two variables