As Internet becoming resource allocation method day by day, the society is now in the era of "Internet plus”. This requires that we think and innovate the trade union communication with Internet thinking based on the spirits and rules of Internet. The communication system of the trade unions changed greatly in the current media environment and the actual situation than before, and the information needs of trade union members changed greatly as well. As the "disintermediation subject", trade unions need to get rid of past propaganda thinking, grasp opportunities of the "Internet plus" era, develop their own opinion leaders, increase attractiveness, remodel union communication system, improve the dissemination of trade unions. To this end, trade unions need to adapt to the diversity of the communication subjects at the Internet communication stage, establishing an information communication platform for a large number of trade union members to participate in. Meanwhile, trade unions should take advantage of the characteristics of information interaction and emotional interaction of social media, establish new media community of workers to obtain the inner identity of union members; in specific propaganda and public opinion guidance, the unions should pay attention to the use of big data and develop new media opinion leaders; the trade unions should unite the media from all circles to have multi-channel linkage, shaping their own good image.