The key of the vibration testing is to replicate the practical vibration environment of the structure accurately. The traditional random vibration test with frequency domain method aims to generate a stationary and Gaussian vibration environment. But the practical vibration environments are always superGaussian, which can cause different damages to the structures compared with Gaussian excitations. Thus, it is significant to study the superGaussian test method. In this paper, the phase selection method and the traditional PSD decomposition method are combined to generate superGaussian driving signal according to reference power spectrum density and kurtosis. A cantilever beam is used for the simulation and the results indicate that the error between output response spectrum and reference spectrum based on the proposed control algorithm meets the requirement ±3 dB in engineering and the kurtosis also satisfies the demands. Finally, a test with a cantilever beam is completed and the control results indicate that most output response spectrum lines are controlled within the error band, and the kurtosis meets the reference requirement.