Data mining analyzes a large amount of data through automatic or semi-automatic methods. It can be used to establish effective models and rules. The enterprises can better understand their customers through data mining and improve their marketing, product design, manufacturing, production, business, and customer service operations. The work of data mining includes classification, estimation, prediction, affinity grouping, clustering, and description of data. This course aims to introduce data mining technology and its applications so that students can truly understand and use data mining techniques to solve practical problems.