In the era of big data, data has become a very important resource and wealth, and the development of higher education pays more and more attention to the application and promotion of big data. Based on the background of big data, this paper discusses the Internet plus tax reform to promote the reform and innovation of tax law in Colleges and universities, analyzes the existing problems and puts forward reform measures, so as to promote the integration of big data and tax law education in universities and colleges in China.