Abstract:With the advent of the knowledge age, how to promote team knowledge sharing is an important issue that needs to be solved in the academic and theoretical circles. At present, the research from the perspective of social exchange theory lacks attention to individual self-consciousness. Therefore, from the perspective of self-concept theory, and based on the relevant consistency theory, the relationship between leadership-member exchange and knowledge sharing is studied by using organizational self-esteem as a mediator and self-efficacy as a moderator. The theoretical model of the study was tested by conducting a two-stage follow-up questionnaire survey of 202 employees from two manufacturing companies in Guangdong Province. The empirical results showed that leadership-member exchange significantly influenced knowledge sharing through the mediating effect of organization-based self-esteem, and the self-efficacy negatively moderated the relationship between leadership-member exchange and organizational self-esteem, while it also moderated the mediating effect of organization-based self-esteem.