This study aims to focus light on practices of Human Resources Management at the Public Academic Libraries located in Jordan, and their role of determining the effectiveness of the Personnel performance and the quality of services presented to users in these libraries in peculiar Al-Hussein Bin Talal University Library. It explores the concept of Human Resources Management and the environment and tries to examine role of the functions of human resources management and how they may impact the effectiveness of personnel performance. The current study concluded that a number of results that all the tested variables are negatively correlated. It is recommended that enhancement and improvement of the performance of the Academic Libraries employees should be taken into consideration.