In order to design a large deformation of flexure hinge with high precision and simple structure and to promote the motion precision of parallel platform and the life of elements, a Y-type flexure hinge was proposed in the article. Firstly, made analysis and study of the rotation center, installation method and stroke requirements of flexure hinge by application of ANSYS and ADAMS. Secondly, processed the flexure hinge by using CNC machine. Thirdly, measured the axis drift of flexure hinge by using the 3D optical coordinate measuring instrument OPTOTRAK. Finally, conducted the circle trajectory experiments of parallel platform with kinematic pairs, leaf spring flexible hinge and Y type flexible hinge. The results show that the maximum rotation error of Y type flexure hinge is 0.596 2 mm and the maximum error of circle trajectory on the parallel platform provided with Y type flexible hinge decreased by 42.7% as compared with on the parallel platform provided with kinematic pairs, which means Y type flexure hinge can substitute the kinematic pairs in the parallel platform and able to promote the motion precision of the parallel platform.