中文摘要：

领导-部属交换对员工帮助行为的作用边界尚未被有效地确认。运用206份两轮时点的配对问卷样本，通过多元线性回归分析检验领导-部属交换对员工帮助行为的影响及其边界机制，包括领导-部属交换与个人-组织匹配感的两维交互对员工帮助行为的作用以及领导-部属交换、个人-组织匹配感和员工职业阶段的三维交互对员工帮助行为的作用。研究结果表明，领导-部属交换对员工帮助行为有显著正向的影响，个人-组织匹配感调节领导-部属交换对员工帮助行为的影响，员工职业阶段调节了个人-组织匹配感对领导-部属交换与员工帮助行为的调节作用，在不同职业阶段个人-组织匹配感对领导-部属交换与员工帮助行为的调节作用不同。

英文摘要：

The boundary condition between leader-member exchange （ LMX） and employee helping behavior has not been identi-fied yet.Based on 206 matched questionnaires which are collected in two-wave investigation, the study explores the effect of LMX on employee helping behavior and the boundary mechanism between them , which includes the impact of two-way interaction of LMX and Person-Organization （ P-O） fit on employee helping behavior , as well as the impact of three-way interaction of LMX , P-O fit and career stages on employee helping behavior .The results indicate that：①LMX has positive effect on employee helping behavior;②the P-O fit moderates the relationship between LMX and employee helping behavior ;and ③in different career sta-ges, P-O fit exerts distinct moderating effects on the relationship between LMX and employee helping behavior .