| Manuel Castells believes that the network society is a new social form,with the typical characteristics of mobile space and timeless time.This characteristic especially affects the communication mode of generation Z youth groups,"always online,default interconnection" has become the norm.The virtual space "hangs" the real factors and creates a relatively "relaxed environment",which not only meets the tool use motivation of youth groups,but also helps them to adjust their psychology,affects the subjective well-being.Therefore,this paper constructs a relationship model to study the relationship between two variables,and introduces network social support as an intermediary variable to explore its intermediary effect.This paper selects young people aged 20-34 as the research object,obtains the basic data by questionnaire survey and in-depth interview,analyzes the data by SPSS.Through the demographic characteristics,this paper analyzes the differences of youth’s network communication motivation,network social support and subjective well-being in gender,age,education,region and network use frequency;According by predecessors,the network communication motivation is divided into two dimensions: tool use and psychological regulation,analyze the relationship between different dimensions and subjective well-being,and test the intermediary role of network social support.The study found that there are differences in the motivation of network communication among youth groups in educational background,region and online time;There are significant differences in age and region of network social support;There are significant differences in subjective well-being in age,region and online time;There is a significant positive correlation among youth’s network communication motivation,network social support and subjective well-being;Network social support plays a partial mediating role between network communication motivation and subjective well-being of youth groups. |