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The large imaging width, multi-imaging mode, multi-time and space coordination,all-weather and all-day requirements of earth observation satellite, which proposed a very high claim of high-precision, high-stability attitude control technology, high-precision orbit determination technology. In order to ensure that the satellite orbit determination accuracy meet the design requirements and improve the ability of satellite orbit analysis technology, proposed to build multi-mode Precision orbit semi-physical simulation verification system. Which used on the ground to simulate varies space borne navigation equipment to reduce risk of space borne navigation equipment and improve reliability. This article propose a design method of multi-mode Precision orbit semi-physical simulation verification system. The platform includes a navigation board and an interface board. The simulation platform weighs about 1.5kg, size 220mmx140mmx70mm, power consumption of about 20W, compatible with GPS L1/L2, BD B1/B2/B3. This platform simulate space borne navigation equipment’s performance of orbit determination, positioning, and timing, provides data for high-precision orbit determination. This article provides a new way of simulation and verification for space borne navigation equipment.