To improve the navigation accuracy of laser strapdown inertial navigation system(LSINS), the model parameters of inertial instrument must be tested. In this paper a kind of parameter test method of using the double axes speed turntable with temperature control box is designed, and the parameters in various environment temperatures are calibrated. Because of temperature compensation the navigation error of LSINS is reduced effectively. As shown by the experiment results, this test method is more accurate and applicable to the medium accuracy LSINS.