Online learning has gradually become an important form of learning in higher vocational colleges, and this field has be- come one of the current research hotspots. In this paper, online learning is briefly introduced, and the application of big data technol- ogy in online learning platform is briefly analyzed, focusing on the research and analysis of online learning behavior elements of five-year higher vocational nursing students, so as to provide reference for better online learning evaluation, to promote better online learning in higher vocational colleges and improve the quality of online learning.