Sorting out the production process and current situation of the policy discourse in the social media is an effective way to evaluate the social responsibility of the new media and to further optimize the dissemination of the policy.This paper examines the production of the Belt and Road policy discourse in the public address of the WeChat，and finds out that the production of the Belt and Road policy discourse is a result of the participation of the government department and the non-government department.New media that involved in the process of policy communication has enriched the channels of policy communication，but also increased the risk of policy alienation because of inadequate function of its policy dissemination，and interfered with the public awareness of the correct discourse of policy.Therefore，the spread of new media on policy discourse should meet new media social responsibility，encourages the non-government platform to improve its original level and the authority of the source，and form a policy to spread the new media matrix with the government platform.