This research has been conducted to identify the impact levels of the various staff support services and promotional activities of library on the user satisfaction. Primary data were collected from 640 library users and analyzed using different statistical measures such as central tendency, measures of deviation, simple and multiple linear regression analysis. A model of impact has been developed based on the results. The high, medium and low impact factors of the library services and promotion on user satisfaction have been identified. Also, the recommendations for the library managers, academicians and management to encourage the library users to use the library facilities and staff support services to enhance their knowledge have been expressed.