Social network is social network service, which comes from the translation of English SNS. Chinese literal translation is a social networking service or social networking service, while free translation is a social networking service. The meaning of social network includes hardware, software, services and applications. Because four-word phrases are more in line with the word-formation habits of China people, people are used to referring to SNS (social networking service).

In the final analysis, social network is not only some trendy business models, but also a key force to push the Internet infinitely close to the real world from a historical perspective. Social network covers all forms of network services with human socialization as the core. Internet is an interactive platform that can communicate with each other, communicate with each other and participate in each other. The development of Internet has already surpassed the original military and technical purposes of ARPANET. Social networks expand the Internet from research departments, schools, government and commercial application platforms to human social tools.

Social networking extends its scope to the field of mobile phone platforms. With the popularity of mobile phones and the application of wireless networks, various softwares, such as dating/instant messaging/email transceiver, such as 6: 15, are used to make mobile phones the carrier of new social networks. Social network, that is, network+social. Connect people through the network, thus forming a group with certain characteristics.