Social network is social network service (Social Network Service)，It is an important platform for people to conduct online social。China Internet Network Information Center (CNNIC) 45th "Statistics Statistical Report on the Development of China Internet Network"，As of March 2020，my country's instant messaging users reached 896 million，account for 99.2%of the overall netizens; the usage rate of QQ space is 47.6%，The usage rate of WeChat friends circle is 85.1%，The usage rate of Weibo is 42.5%。With the in -depth development of the mobile Internet and social networks，Social networks present new features and forms。First, social and video fusion。Now，All kinds of audio、Short video、Live and other new social forms and social products are endless。"Multi Flash" based on short videos、Sound -based "Squeak" and "Sound encounter"、Live broadcast function of Bilibili，All greatly enhance the user's actual experience、immersion and use of stickiness。Second, social and technical fusion。5G technology rapid development and application，Not only does the information transmission speed 10 to 100 times faster than 4G，Improving the interaction efficiency and interaction quality between users，It also greatly promoted big data、Comprehensive use of technologies such as algorithm recommendation，Make "User Portrait" more three -dimensional、Comprehensive、Real，Information communication is more accurate，achieved "one person, one grid，Personalized information push effects of thousands of people。Third, social and mobile fusion。Mobile social networking has become the new normal for users to socialize。With the mobile Internet、Development of the Internet of Things，People、Machine、Things will accelerate the realization of interconnection，and promote the deep integration of social and mobile。Fourth is the integration of social and occupations。The National Investigation and Big Data Research Center of the Chinese Academy of Social Sciences and Big Data Research bet365 best casino games Center and Tencent Internet and Social Research Center first released "Living here -social network and empowerment research report"，86%of young people can express their identification with social networks to increase occupations and job opportunities，More than half of young people have expressed their willingness to try to choose a career on the Internet and social networks。Now，Social network is not only an important platform for youth social communication，It has also spawned some new employment modes，Has become their career choice、Important platform for production and transaction。

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According to the study of the predecessors，It can be divided into different categories based on different standards。Divide the intensity of use，It can be divided into social network use behaviors into excessive social networks and non -excessive social networks。To the degree of social network use，Excessive and non -excessive is a relative concept，There is no clear definition in the academic world。Excessive social network use is often called problematic social network use，It is a long -term and high -intensity social network use behavior。Moreau and others think，Excessive social network use will cause individual psychological distress and physiological discomfort。So，We can use non -excessive social networks as a low frequency、Low -intensity social network use behavior。

Divide it from the way to use，Social network use behaviors can be divided into active social networks (Active USE) and Passive USE。FRISON and others think，Active social network use refers to a message by individual actively through social networks、Comments、Like、Interactive and status update and other network behavior activities，Then better strengthen the communication and interaction between yourself and friends。Passive social network use is a kind of news dynamics mainly through social networks、Text information、Video and other network behaviors，Lack of initiative and enthusiasm for communication and communication with people in the use of social software。What people usually call "network diving" is a typical passive social network use behavior。

The reason why young people choose to use social networks，The technical function of social networks bet365 best casino games is external incentives，The technical function of social networks is external incentives。At present, there are at least three theories that can explain the internal reasons used by social networks。First, the "rich man is more rich" model。This model believes，Those individuals with more outer dumping and more social support，For individuals with limited internal and social support，Can get more benefits from the use of social networks。Individuals with a higher level of socialization are more willing to communicate with others through social networks、Strengthen contact with old friends and make new friends。Studies by Peter et al.，The online self -disclosure and online communication of young people in the outer dumping type are more than internal individuals，They can obtain higher socially involved and mental health levels through the use of social networks，This prompted them to form online friendship faster and better。

Second, the "poor person becomes rich" model。This model believes，Social network has social compensation functions，Social network behavior is the compensation performance when the individual is frustrated during the development process。For example，Adolescents accompanied by depression may transfer attention to social networks，Try to alleviate depression through online communication with others、Avoid emotional pain。Cohen (Cohen) and Howard (HOWARD) and other people research discovery，One of the main motivations for individual social networks is usually to avoid real life。Satici et al.，The low life satisfaction and low happiness of individuals have a significant predictive effect on its Facebook addiction behavior。Zong Yinan and others think，Most young people who are addicted to the Internet have interpersonal communication problems in real life，Due to social fear、Holiday social avoidance、Insufficient interpersonal communication ability and other reasons，It makes them easier to suffer in real life、Lonely、anxiety、Negative experiences such as inferiority and helplessness。relative anonymity of social networks、The body is not present、Non -instantaneous characteristics are more likely to make social difficulties have a sense of security and bet365 Play online games relaxation，The active interpersonal communication experience that they cannot get in real life can get compensation through social networks。Poor parent -child relationship with a family、Adolescents with poor real relationships，It is bound to associate with netizens through social networks to satisfy their compensation for their friends and emotional support。When the virtual social network is satisfied than reality and satisfaction，Individuals are more likely to indulge in it。

Third, use and satisfy the theory。This theory is proposed by sociologist Katz Elihu in 1974，has been widely used in the selection and use behavior of the media。This theory thinks，The purpose of individual use of social networks is mainly to meet the needs，The use of social networks helps to meet the needs of individual self -expression and the needs of belonging。Maslow's need hierarchical theory thinks，The need for belonging and love is the basic missing nature of the individual。According to the theoretical assumptions according to use and satisfaction，People will actively participate in the choice of social networks，Everyone will choose and participate in different types of social networks based on their own characteristics，To meet its specific needs。A study by Xi Jie shows，Online communication with college students can meet the needs of six aspects，Self -improvement、Interpersonal communication、A sense of accomplishment、Leisure and Entertainment、Meeting of role -playing and autonomy。

　　Social network use affects the level of mental health

One，The relationship between the use of social networks and sleep quality。Large study evidence indicates，Usually poor sleep quality is related to the use of computers and the Internet。Garmy and others research discovery，Insufficient sleep time for teenagers、Go to bed late、Long -term light sleep state and the increase in fatigue during the day are all related to the increase in frequency and time used。Espinoza (Espinoza) conducted a survey of 268 young people，The results show that 37%of people report that insomnia occurs due to the use of social networks。Woods (Woods) and Scott studied the quality of sleep and social networks for young people、Specific relationship between social networks bet365 best casino games using emotional input，Results indicate，Social network use and more emotional investment, the worse the quality of the youth sleep。Yang Banglin and others' investigations on 769 master's degree students found out，Passive social network use has a significant positive predictive effect on the sleep quality of a master's degree。Research from Hu Chunmei and Lu Qi also found，Sleep problems and vision issues of individuals of social network addiction are more prominent，The longer the social network time is used or the more serious the social network addiction problem，Sleep quality is worse。Different functions from the Internet，Social network has information reminder function，Users may receive reminders of various types of information at any time of the day。This feature of social networks especially affects users' sleep quality。A survey of Van Den Bulck found，A quarter of a youth report will cause sleep or interruption after receiving the social network SMS reminder。，Individuals are likely to be difficult to get relaxed because they are worried about missing new information or content，then affects sleep quality。

Its two，The relationship between the use of social networks and the status of anxiety。Thomee and others think，The use of social networks may cause anxiety and information missing fear，When the social network SMS usage function of the individual is limited，They will feel anxious; when they do not reply to the information in time，They will feel stress and guilt。Qiu Wenfu and others research shows，Social media use intensity and anxiety is significantly positive，And the intermediary effect of uplink society in the use of social networks and the effects of the intermediary effect of psychological capital has an impact of anxiety。Dai Shiwei's investigation and research on 792 students also confirmed this conclusion，This study found that passive social networks can directly predict the level of juvenile anxiety，and can have an impact on the anxiety of the intermediary role of the uplink society in social networking sites and the role of self -esteem。This can be explained from two aspects，First, the use of excessive social networks can easily lead to uplink society comparison，This causes youth anxiety。Second, the obsessive bet365 best casino games use of the youth social network can also lead to anxiety。"Living here -social network and empowerment research report" shows，73%Youth Reports Report at least once every 15 minutes to see social software，71.3%youth report will often open social software even if it is a job or meeting，84.4%of youth reports will feel anxious because mobile phones cannot access the Internet。

Its three，The relationship between the level of social network use and depression。Research Discovery，The longer the time for youth to use social networks，The more severe the symptoms of depression，The greater the risk of depression。Research by Patricia Conort at the University of Montreal's psychiatry, Patricia Conort,，Increasing the time spent by using certain forms of digital media within 1 year can predict the depression symptoms in the same year。Pantic and others' studies indicated，The more time spent on social networks，The more obvious the manifestation of depression。Research by Niu Gefeng and others，Social website based on QQ space uses significant positive predictive effects on depression，and the effects of the intermediary of the uplink society in social networking sites affect depression。WRIGHT and others investigated 361 college students，Problem Social network use can directly predict depression psychology。

Four，The relationship between the use of social networks and happiness。Tiggemann and others research discovery，The more adolescents used for social networks，The stronger the inferiority of its own body，thus affecting the sense of happiness of the individual。The longer the social network uses people，The more serious the upward society is，The more you think others are happier than yourself。Studies by Guan Zhilin (kwan) and others，Excessive social network use may also increase the bully of young people's network、Online harassment、Online tracking and other network risks，The longer the social network time is used、The higher the frequency, the more likely it is to be bullied by the Internet。，Show of previous studies，Excessive social network use can also cause marriage crisis。Of course，The impact of different social networks on individual happiness is also different。Discover a lot of studies，Active social network use behavior can effectively promote bet365 Play online games individual mental health，Enhance the active self -evaluation of the individual。Due to active social networks using individuals will upload photos through social network platforms、Share experience、Two -way communication interaction, etc.，Active self -presentation through social networks，They can get more network social support and companion feedback。Passive social networks using a lot of viewing information may weaken the social support of individuals，Reduce individual subjective happiness and life satisfaction。

　　(Author Unit: Mental Health Guidance Center of Fujian Normal University)