Abstract: In order to test the information field performance of laser beam riding guidance, a simulation system based on virtual-instrument is designed. This simulation system is used in the test of information field performance and spatial matching to realize the calibration and built-in-test of testing system. The design accuracy of the information field simulation system is 0.001 unit command and the output signals have advantages of phase continuity, wide dynamic range, stable reliability, high precision and strong extendibility. After the calibration of simulator and standard photometer, the accuracy of instruction test reaches 0.01 unit command. The accuracy of irradiance measurement is 5%. The accuracy of spot size measurement is 5% and the optical axis misalignment is 0.00876. It demonstrates that this simulation is feasible and satisfies the measurement accuracy and stability for testing system. This system features modularization, generalization, intelligence and standardization.