Objective To explore the association between paternal phubbing and child externalizing behavior problems, and investigate the mediating roles of parent-child technoference and maternal co-parenting. Methods A total of 793 fathers of children aged 3-6 years were recruited and completed the generic scale of phubbing, the technology interference in parenting scale, the co-parenting relationship scale, and the strengths and difficulties questionnaire AMOS structural equation model and Bootstrap method were used to analyze the mediating effect. Results There were significant correlations between conduct problems of child externalizing behavior problems and interpersonal conflict, self isolation and problem acknowledgement of paternal phubbing (r=0.16~0.35，P<0.01) The hyperactivity and attentional deficits of child externalizing behavior problems were significantly correlated with nomophobia, interpersonal conflict, self-isolation, and problem acknowledgement of paternal phubbing (r=0.11~0.21，P<0.01)There were significant correlations between parent-child technoference and dimensions of paternal phubbing, maternal co-parenting, and child externalizing behavior problems(r=0.10~0.57，P<0.01)There were significant correlations between maternal co-parenting conflict and dimensions of paternal phubbing and child externalizing behavior problems(:=0.17~0.31，P<0.01)There were significant correlations between the damage of maternal co-parenting and interpersonal conflict, self-isolation, and problem acknowledgement of paternal phubbing and dimensions of child externalizing behavior problem(r=0.13~0.23，P<0.01)The structural model equation indicated that paternal phubbing had direct effect on child externalizing behavior problems. The mediating effect test showed that the parent-child technoference played a partial mediating role between the paternal phubbing and the child externalizing behavior problems, and the mediating effect accounted for 18.42%Maternal co-parenting played a partial mediating role, and the mediating role accounted for 26. 32%The chain mediating effect of parent-child technoference and maternal co-parenting accounted for 5.26 %. Conclusion Paternal phubbing is an important influencing factor for child externalizing behavior problems, and the parent-child technoference and maternal co-parenting exert multiple mediating effects.

目的 探讨父亲低头行为与儿童外化行为问题的关系及亲子技术干扰和母亲共同养育在其间的中介作用。方法 采用通用低头行为量表、技术干扰量表、共同养育关系量表以及儿童长处与困难量表，对793名3～6岁儿童的父亲进行调查。采用AMOS结构方程和Bootstrap法进行中介效应检验。结果 儿童外化行为问题的品行问题与父亲低头行为的人际冲突、自我孤立、承认问题显著相关（r=0.16～0.35,P <0.01）。结构方程模型显示，父亲低头行为对儿童外化行为问题存在显著的直接效应。中介效应检验分析显示：亲子技术干扰在父亲低头行为与儿童外化行为问题之间起部分中介作用，中介作用占总效应的18.42%；母亲共同养育在其间起部分中介作用，中介作用占总效应的26.32%；亲子技术干扰-母亲共同养育的链式中介作用占总效应的5.26%。结论父亲低头行为是影响儿童外化行为问题的重要因素，亲子技术干扰和母亲共同养育在其中起多重中介作用。

国家社会科学基金（18BSH117）