With the rapid development of wireless communication technology, UWB technology has drawn wide attention for its high-speed transmission and high-precision positioning. This paper focuses on the two-way ranging scheme based on UWB technology, aiming to enhance time synchronization and positioning accuracy through optimization and innovation. It reveals the significant potential of Ultra-Wideband (UWB) in time synchronization and positioning accuracy improvement, and points out the deficiencies in existing schemes and possible ways for improvement. The paper shows how to improve system performance and accuracy by making adjustments and optimizing the asymmetric and symmetric double-sided two-way ranging technologies. It also explores the applicability of UWB in different scenarios and provides strategic guidance for practical deployment. Through comparative analysis and case studies, the importance of technical details and the sensitivity to environmental factors in achieving high-precision synchronization and positioning are revealed.