The current monitoring system of dam rolling quality relies on the two-dimensional visual interface, which has the disadvantages of poor visual interaction level, and the C/S (client/server) architecture cannot realize the cross-platform query and sharing of rolling construction information, resulting in the shortcomings of low feedback-control level. In this study, a three-dimensional intelligent monitoring system of construction quality for the earth-rock dam is constructed under the B/S architecture by coupling the hierarchical loading mechanism based on the level of detail(LOD) technology and augmented reality technology. The application results in the Lianghekou Hydropower Project show that the system established in this study can realize the intelligent monitoring of the rolling process, the efficient and smooth cross-platform interactive query, the immersive visual display of construction information, and the intelligent evaluation of rolling quality, which effectively improves the intelligent level of the construction process.