Abstract: National image promotions via New Media are to improve the international understanding of nations,to establish well national image as well as to reflect the national ideology.This paper treats Changing China:2012-2017,produced by Reading China Studio, which is rather popular home and abroad since published, as the exploration subject, and applies the framework of Systemic Functional Linguistics to conduct harmonious discourse analysis via multimodal analysis tool complementally.The result shows that Changing China:2012-2017 has been conveying the true image of China,integrating all aspects of the nation, China.It is a kind of certain beneficial discourse promoted by Arran Stibbe, for the reason that as a discourse for promoting national image,it does bring encouragement to the nation-wide as well as be of importance to keep the inter-nations relationship more living.The present research is also believed to offer new probe angle on how to effectively construct and promote national images as well as introduce national potential "soft powers" in certain international affair-promotion context via New Media.