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Aiming at the engineering requirement of active correction for surface shape of the primary mirror of space camera in orbit, an experiment system verifying the technology of surface shape correction for space reflecting mirror was designed. The experiment system took the surface shape of a SiC reflecting mirror with a diameter of 676mm as the controlled object, nine force actuators based on brushless DC motor as the operating device, the industrial computer based on PXI bus and the measurement and control software based on virtual instrument technology as the controller, the interferometer as the surface shape detection module, and was able to realize the closed-loop control of the mirror surface shape. The experiment showed that the developed force actuator had met the requirements of the output range greater than -320N 320N and the output accuracy better than 0.1N and the correction method based on surface shape influence function was able to correct the mirror surface shape effectively. Tasking the correction of 0.5 wave astigmatism and 0.5 wave trefoil as two examples, the correction deviations after one correction by the nine force actuators array were 6% and 4% respectively. Utilizing the experiment system, the performance of a single force actuator was tested and estimated and the correction method was also validated.