New communication technologies will help to define and shape teenagers’ relationships with their
peers. It is also a social procedure which will deeply impose influence on them. This research focus
on how the peer social network with SITs might affect their friendships. Our data disclosed that SITs
promoted teenagers’ social interaction and enriched their social network. Nonetheless, there is different
power resource distribution compared with their real social networks. At the same time, the real network
index of teenagers being investigated mostly decides the associated SITs network index. We found out
the methodological value of SNA paradigm in effect research of new media. And we also explored thepotentiality of developing new theory with comparison of different hypothesis.