In order to improve the efficiency of the admission system in the Saudi universities, this paper will recommend applying modern approaches related to Decision Support Systems (DSS) through systems thinking. Some of the limitations in the traditional Saudi admission system are discussed and how these problems can be solved through the use of system thinking. The traditional admission system in Saudi universities does not consider the flexible interactions between the individual components of the admission system. This problem generates serious concerns about the overall integrity of the system. The aim of this paper is to develop a framework for designing a proposed admission system for the Saudi universities to solve this problem. This framework will help Saudi universities to analyze the data and make better decisions at each stage of the admission process.