In the paper,the basic process of the interaction between the laser beam and the birefringent crystal particle is discussed theoretically,and physical model of optical rotation due to the transfer of spin angular momentum from the laser beam to particle is established.For improving rotation frequency of crystal particle,the relation between rotation frequency and thickness of CaCO3和SiO2 crystal particle was analyzed in theoretical research and experimental research.The sine relation curve between CaCO3 and SiO2 particle’s rotation frequency and thickness was simulated with MATLAB software,and the results show that experimental curve of rotation frequency and thickness is the periodic sine undulation,meanwhile rotation frequency is proportional to laser power.Rotation frequency is measured under the same laser power,the results show the maximum frequency of CaCO3 particles is 1.7 Hz,and the maximum frequency of SiO2 particles is 1.5 Hz when laser power is 10 mW.The conclusion can be used to the thickness choice of the rotor and the optimization control of rotation frequency in actual application.