In the era of big data, many traditional things are slowly being intellectualized. Traditional paper marking is inefficient, time-consuming and inaccurate. Online marking has changed the traditional way of examination management and simplified the links of answering paper recovery, storage and binding. Intellectual Science Network is an intellectualized teaching and guidance platform based on knowledge point map and high-quality question bank resources, which is launched by Xunfei Co., Ltd. in order to meet the needs of school daily examination and developmental teaching and learning evaluation. It provides users with simple and easy-to-use system operation and comprehensive resource services, fully excavates the value of campus examination through large data analysis, and integrates PC and mobile terminal based on cloud service. The program provides information environment and services for each teacher and student for targeted teaching and personalized chemistry. This paper makes a preliminary study on the realization of students'learning evaluation under the big data of Intelligence Network.