[Abstract] Objective: The aim of this paper is discussing the potential relationship among meaning in life and internalizing and externalizing problems of adolescents. Methods: A total of 472 college students were investigated by using meaning in life questionnaire, Depression-Anxiety-Stress Scale, Aggression Questionnaire，Social Connectedness Scale and Resilience Scale. Results: From mediation examination, for internalizing problems, the direct effect of meaning in life was significant(β=-0.457,P＜0.001)After the chain mediation of social connectedness with resilience，its direct effect was still significant(β=-0.135,P＜0.01)For externalizing problems, the direct effect of meaning in life was significant(β=-0.307, P>0.001)，but it turned to be insignificant(P>0.05)after social connectedness and resilience mediated this relationship. Conclusion: The chain relationship of social connection and resilience partially mediates the influence of meaning in life on internal problems，while completely mediates the influence on external ones.

目的:探讨生命意义感与青少年内外化问题行为内在机制。方法:采用生命意义感量表、抑郁—焦虑—压力量表、攻击性量表、社会联结量表和心理韧性量表，针对472名大学生进行调查。结果:中介模型检验发现，对于内化问题行为，生命意义感的直接效应显著(β=-0.457,P0.05)。结论:社会联结、心理韧性的链式关系部分中介了生命意义感对内化问题行为的影响，而完全中介了对于外化问题行为的影响。

国家自然科学基金面项目(编号:NSFC71672186);; 中科院心理所创新项目(编号:Y1CX193007)