This study aims to: (1) To determine the effect of frequency of use of library services to Hasanuddin University student achievement, (2) To determine the effect of the intensity of use of library services on student achievement Hasanuddin University, (3) to identify and analyze the factors which dominant and significant effect on student achievement. This study was conducted at the University Library Unit Hasanuddin Makassar with the entire student population of the University of Hasanuddin who visited the library with a sample of 76 students. Analysis of the data used is descriptive analysis to describe the frequency of the use of a variety of data services in the library and student learning achievement Unhas. While a simple linear regression analysis with the Product Moment Correlation Coefficient formula is used to prove the existence of a positive relationship between the use of library services to the achievement of students. Research results show that the alleged hypothesis Ho is rejected and Hi There welcome the positive and significant relationship between the use of library services to the achievement of students at the University of Hasanuddin. The results also showed that the variables most dominant circulation services affect student achievement
