In recent years, social networks are gradually becoming popular with a large number of users usage is increasing. It is having a huge impact on modern society and, of course, businesses is no exception. Compared with old communication methods, social networks have outstanding characteristics helps it play an increasingly important role in the promotion process of the business. This news will introduce about social network, its role in social life, as well as point out the pictures The influence of social media on business promotion. From there to export the steps to take to have a successful promotional campaign.