The Conference of the forum of Big Data technology and applications 2015 will take place in Harbin, Heilongjiang Province, China, and December.25, 2015, hosted by CCF and co-hosted by CCF TCAPP. The development and applications of our country’s Big Data and Cloud Computing have made progress, the industry policy is constantly upgrading and improving. Because of these, our country’s Big Data industry will enter rational development and land applications’ stage. Also it is expected to make a breakthrough in some key industries such as communications, internet, finance, medical treatment and Smart City. Although Big Data has brought new changes and opportunities, our country’s Big Data industry is still in the initial stage of development .There are many changes which we must face, for Example, overall strategic planning is still to be deployed, the core technology of Big Data and the development of data resource need breaking done, industry collaboration and the bottlenecks of the business model is still to be resolved, the situation of data security and privacy protection is grim. The Forum of Big Data technology and applications 2015 will build up a high-end interactive platform. At that time many Public figures and Expert scholar will gather together. They will mainly report and discuss the problem which exit in our country’s Big Data’s core technology and different application areas. Of course, we also will discuss how to break through it so that we can promote the applications of our country’s Big Data and land it.