In the process of solving Euler vector basing on GNSS horizontal movement field, the number of estimated parameter can affect the results of Euler vector. This issue is analyzed through theoretical deduction and practical example in this paper. Firstly, the difference between the results of Euler vector in different solving models is deduced. Meanwhile, basing on GNSS horizontal movement field in Chinese mainland from 2004 to 2007, two common models （ RRM and REHSM） were used to discuss the impact of solving model on Euler vector and follow-up study. The result shows that the maximum value of the difference in block＇s entire rotation can reach 2.6mm. a-1, and it should not be ignored. Therefore, the results of horizontal movement are different when different kinematic block models are used, and it should be paid more attention to in the analysis of crustal horizontal movement.