目的 研究青少年网络成瘾的现状及其与家庭功能、社会适应的关系。 方法 对全国六个城市的2350名中学生进行网络危险行为、网络成瘾、家庭功能和社会适应的问卷调查。结果 ①中学生网络成瘾的比例高达15.53％，且表现出男生高于女生、非重点中学高于重点中学、初二高二年级高于其他年级的特点；②青少年网络成瘾与非成瘾者在家庭功能的相互关系、关心与照顾、沟通、父母控制和矛盾性五个纬度上差异显著；③青少年网络成瘾与非成瘾者在社会适应的全部八个纬度上差异均显著；④家庭功能、社会适应对青少年网络成瘾具有显著的预测作用，家庭功能在青少年网络成瘾与社会适应的关系中起到了调节作用。 结论 家庭功能的缺失是导致青少年网络成瘾的一个重要原因；青少年社会适应状况对网络成瘾具有重要的预测作用。

Objective To examine the state of adolescent internet addiction and explore its relationship with family functioning and adolescent social adjustment. Methods 2350 secondary students from six cities are tested by internet dangerous behabior quesitonaire, internet addiction verification scale, family functioning accessment scale and adolecent social adjustment assessment Scale. Results ①The percentage of adolescents addicted to internet achived 18.07％and is higher in boys, commmon school and grade 8 and 9 than girls, core school and other grades. ②Significant differences between internet addicted adolescents and the others are demonsrrated in Mutuality, Communication, Conflict and harmony, Parental concern, Parental control dimensions of family functioning. ③There are significant differences in all eight dimensions of adolescent social adjustment between adolescents who addicted to internet and the others. ④Family functioning and internet addiction to some extent predict adolescent social adjustment. Family functioning takes a conditioning role in the relationship between internet addiction and adolescent social adjustment. Conclusion The deficiency in family functioning is one important reason for adolescent internet addiction. Adolescents’ social adjustment acts an important role in predicting internet addiction.