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To realize the simulation of a new type of satellite system’s "frame message model" of 1553B bus, a new 1553B bus house-keeping simulation system is designed and established. Through the analysis of the original implementation mechanism, changing the design of the simulation software and adding the high-precision time acquisition module and 1553B board control module to VxWorks computer, a high real-time 1553B bus simulation systems is designed. It is showed that:The system can not only meet the "frame message mode" simulation, but the 1553B board execution maximum delay time is reduced to 0.713 ms, which is shorter 6.5 times than the original house-keeping simulation system maximum delay 4.5 ms, and provides accurate time data support for the device under test.