Abstract: IR imaging system on stabilized platform with gimbals is usually designed employing the linear cryocooler for small vibration.These systems trade off weight,size,and input power.Common rotary Stirling coolers take on bigger vibration than that of linear cooler though more efficient.The rotary cooler possessing parallel-axis layout could have a small effect on platform with high efficiency.This paper depicts the sources of self induced vibration and the characteristic of the stabilized platform.The rotary Stirling cooler is designed according to gimbals.Overturning moment can be countered by the bearings in platform,and then the payload jitter smaller.The new rotary Stirling cooler is compatible with the stabilized platform.