The anti solving equations were established according to the a 3——UPS——1——PS parallel mechanism model, hardware composition and control principle and the speed transfer matrix of the parallel mechanism was confirmed；Aimed at characteristics of 3-UPS-1-PS parallel institutions, multi—axis motion control system based on LabVIEW was developed by according to the“PC+no—tion control card”design.The design was expected to drive control of the organization through the PCI -7354 motion control card and UMI-7774 data acquisition card.Simulation results show that the system is capable of accurate single—axis and multi—axis contr01.The system software is easy to op—erate and friendly interface.