Abstract: Dehasen University (Unived) Bengkulu is one of the private universities that is committed to improving service quality standards and continuously strives to improve and dissect in meeting the expectations of its customers, namely students. Good service quality is a guarantee desired by every student in conducting lectures. Then it is necessary to build a decision support system with the application of Bayes calculations in evaluating University services to students, because qualified services will get the attention of the public. The results of this measurement can be used by university leaders to improve and improve services in fulfilling student rights so that the quality of unived education will be better and improved.