A non-linear dynamics model of Ravigneaux compound planetary gear sets which adopts the intermediate floating component is set up based on the theory of the concentrated parameter. By considering the position errors and eccentric errors, the load sharing coefficients of the gear sets are calculated. The curves of the relationships between the mesh errors and the load sharing coefficients of the gear sets are obtained and the impact of these influence factors on the load sharing characteristic is analyzed. The research results show that the position errors of planet gear can lead to the planet gear with persistent partial load, and the eccentric errors of planet gear will lead the corresponding meshing pair to have a greater impact in the process of movement. By reasonable distributing the errors of the planet gears in radial symmetry, it will be able to reduce the effect of mesh errors of the planet gear to load sharing characteristics.