This research explores the impact of scope change on project management, specifically focusing on Omantel Company. The study discusses various concepts and theories related to project management, including complexity theory and disruption theory. It identifies causes for scope changes and applies positivism research philosophy with deductive approach as methodology. Data was collected through mixed methods, including online surveys and interviews, and analyzed using both qualitative and quantitative data analysis. The findings highlight the risks associated with changing project scope during design and implementation stages, including budget constraints, reduced team morale, and increased risk. Ultimately, the study concludes that scope changes can disrupt project objectives and suggests improving deliverable quality as a potential solution.