Through statistics of the seven important academic journals libraries and the people’s daily database，this paper studies the diffusion and development process of Big data based on Innovations Diffusion Theory. It tests the hypothesis by unstructured in-depth interviews with 30 interviewees who are from Beijing，Shanghai，Shenzhen and Wuhan with different background. In order to verify the hypothesis further，it surveys a random sampling of 500 with 431 valid samples. It finally confirms that after media’s persuasion for several years，people have accepted this new Application，but it needs to pay more attention on humanity in the process of its diffusion and Application，especially the mechanism of personal data security and privacy protection. At last，this paper puts forward some countermeasures and solutions to the problems.