Abstract:Sun Yatsen, in his revolutionary experience, was always shouldering the dissemination of revolution and republic ideas and the steering of the public opinions in order to agglomerate the force of four hundred million Chinese to overthrow feudal monarchy and to establish a republic China. From submitting a memo to discuss politics and actively sending manuscripts to newspapers to running newspaper to form a style, from initially emphasizing revolutionary speeches to gradually relying heavily upon the practice of newspaper dissemination and speeches, Sun Yatsen gradually formed public opinion communication ideas by using speeches and newspapers and by steering public opinions and by ensuring speech freedom and so on and used these ideas and practice to guide and push forward the process of democratic revolution and the development of the construction cause of Republic of China.