The potential for big data analytics to improve social work students’ professional qualities in a more in-depth dimension is tremendous. However, the application of big data in it is at a nascent stage. This research provides an online brushing system’s model design with the data sources and methods that towards big data analytics, and describes operation interfaces, including programming brushing module and knowledge brushing module. The practice shows that big data will fulfil its potential as an important role in a quality-expanding system; also, it provides a view to dynamically extend and integrate modules considering the changing demands.