Switched-inductor Boost converter has been widely used in the new energy systems. Whereas its complex nonlinear dynamic behaviors, such as bifurcation and chaos, have led to the failure of converter. Therefore, it is necessary to control the converter to stable state from chaotic state. In this paper a new chaotic control scheme based on parameter-perturbation method is proposed and applied to a peak current-mode controlled switched-inductor Boost converter. And the converter operating in chaotic state can be controlled quickly to the period-1 orbit with better performances, such as higher voltage-gain and lower output ripples. In addition, the system can work stably when the input or load resistance has large disturbance, which means that the new scheme has better stability against input voltage or load resistance disturbance. The analysis of failure mechanism and chaos control based on the nonlinear characteristics of the converter can be helpful for the design of circuits’ parameters and the performance improvement.