High accuracy turntable is an important part of space optical remote camera. In order to achieve better remote sensing imaging effect, the angle measurement accuracy of space turntable is required to reach sub-arcsecond and control accuracy to reach arcsecond. An correction method based on ring laser goniometer is proposed to solve the problem of insufficient accuracy of common goniometer sensors. Firstly, according to the shafting structure and driving characteristics, the angle error model of the turntable is established, and then the turntable is driven with a given trajectory. The angle of the turntable is measured synchronously by the ring laser goniometer and common goniometer sensor on the turntable. The angle data of the ring laser goniometer is taken as the benchmark, combined with the angle measurement error model to correct the common goniometer sensor data, while the zero position of common goniometer sensor data is turn used to correct the sealing error of the ring laser goniometer. Finally, the measured data show that this method can improve the measuring accuracy to less than 1 arcsecond.