Big data has the potential to fundamentally transform society.Data inequality refers to a variety of information gaps in practical activities that different countries（or regions）, organizations, communities and individuals in the data collection, analysis and use,and its essence is the inequality of the right to information control. The way of the elimination of data inequality is to change people＇s big data-oriented behavior and concepts,redefine personal information rights, rebuild the system of personal information protection rules, promote the rebalance among public power, civil society and civil rights, promote innovation of technological and human resources.