Library marketing has received increased attention in the field of library studies in recent years as an effective strategy for library management. This paper intends to illustrate the importance of library marketing and reader services in library management using the methodology of documentation. To achieve the stated objective, this paper is divided into three parts: (1) library marketing, (2) reader services, (3) the relationship between library marketing and reader services. And this paper is focused on these issues: Why does a library need marketing? What are the strategies of library marketing? What are the dimensions of library marketing? What are the items of library instruction service?.