Tidal friction leads to secular changes of lunar orbit and Earth's rotation. It is very important to accurately determine these parameters for understanding the evolution of the Earth-Moon system. The theoretical methods for solving these parameters are described. The analysis results of astronomical observations， low-Earth-orbit satellites observations， numerical tide models and Lunar Laser Range（LLR） data are reviewed and compared. It is found that low-Earth-orbit satellites and LLR data are more accurate than astronomical data， but the data span is shorter. With the accumulation of observational data， it can provide more reliable information about the long-term changes of the Lunar orbit and the Earth's rotation， improving the cognition of the changes of Earth-Moon space environment.