The negative effect of satellite vibration on the intersatellite laser communication was presented, including the increase of bit error rate. To solve the problem of random vibration compensating, a testbed was designed and assembled,which detects the deflection angle caused by vibration with a high frame frequency area charge coupled device. The testbed simulates and compensates vibration with fast steering mirrors actuated by piezoelectric actuators. As there is difference between sine wave vibration and random vibration, the compensation efficiency factor ηR is defined to evaluate effectiveness of random vibration compensation. The experiment result shows when the sample rate of CCD is three times of that of vibration frequency, the compensation efficiency is remarkable, and the compensation of the testbed is effective.