Under the existing information technology conditions,data analytics based on user information behavior has becomean important way to improve service quality. Based on the perspective of library user information behavior evaluation,this paperconstructs corresponding evaluation indicators after a detailed understanding of the realization of library user tags and thecollection of reader information behavior. Finally,by evaluating the weight value of the calculation indicators,the basic workdirection of library user information services in the future is determined. According to the research results,computer technologyin the field of information behavior can significantly improve the level of data analytics in libraries, lay the foundation forstrengthening user service capabilities,and has certain promotion value.