This paper mainly describes a search module, based on the BP neural network model, in Beijing Vocational College of Electronic Science Student Work Management System. The module is for selecting the appropriate work based on the machine learning. This module creates the BP model for every user and adjusts the weight and threshold of the BP model while students use the search module to browse other students' work. And as a result of the experiment, after about 60 or more times of the weight and threshold adjustment, the errors can be reduced into 0.01.