The coming of micro blog started a new era of interpersonal communications ,as a new tool of communication,it have influenced people's daily lives.Everyday people send messages and read updated news through micro blog,  we have entered the era of micro blog unconsciously.However,micro blog is a double-edged sword,we should  use it reasonably.

Apart from general public,many influential people and stars like delivering various views and renewing their own condition on  micro blog,it's very convenient for young people to interact with the idol.The government also take micro blog as governmental platform to know publis opinions, solving livelihood issues  as required,it's also helpful to supervise officials and  suppress corruption.And micro blog is also a window for foreigners to understand China.

Obviously,there are some disadvantages of micro blog.Some stars often hype and enhance popularity in this way.Some people indulge in publishing boring news and neglect work and study.What's more,some people carry out criminal activities through micro blog and bring about unstability of our society.

In general, there are potential economic values of mass media, the spread of micro log has promoted social progress and its advantages overweight disadvantages.We should make full use of this tool with a rational attitude.