Abstract: Unreasonable use of mobile phones can easily lead to adolescent phone dependence, which in turn has adverse effects on their physical and mental health, academic performance, and socialization. Existing research indicates that individual psychological needs satisfaction, parental parenting abilities, and parent-child relationships are important factors affecting adolescent mobile phone dependence. Based on this, a multifamily group work method was adopted to intervene in adolescents and their parents who have a tendency to rely on mobile phones, and the intervention effect was measured through a combination of quantitative and qualitative methods. The research findings indicate that the service recipients of the quasi-experimental intervention group have significantly improved compared to the control group: the psychological needs of adolescents have been met to a certain extent, the parenting ability of parents has also been improved, and the parent-child relationship between the two parties is more harmonious. At the same time, the use of mobile phones by adolescents has been reduced, and their dependence on mobile phones has been significantly reduced. It can be seen that the multi-family group work intervention targeting adolescent mobile phone dependence has achieved short-term positive results.

Key words: teenagers, mobile phone dependency, multifamily group work, intervention research