Technology of laser driven micro-nano devices provides a new way for driving micro gear in the field of micro mechanical. The polarization induced rotation can be achieved by the transfer of spin angular momentum of polarized light to birefringent particle. Main factors influencing the rotating angular velocity of uniaxial crystal particles are considered, (such as: thickness and radius of the particle, angle between optical axis and crystal plane, reflection of light beam on the crystal plane, phase contrast between the ordinary and extraordinary rays, laser power). The general formula of rotating angular velocity is derived based on the theory of wave optics. The precise manipulation and rotation of calcium carbonate particles is achieved by optical tweezers. By comparing numerical simulation with experimental analysis, results show that experimental results are smaller compared with theoretical data, which is caused by the smaller effective power of laser beam than the measured. The angular velocity of calcium carbonate particles is proportional to laser power, and inversely proportional to the cube of particle radius, moreover, a periodic variation with thickness. According to the test results and theoretical analysis, the parameters of mechanical microrotor are optimized design to improve the rotation frequency. The design results show that calcium carbonate particles chosen as mechanical rotor is more appropriate, furthermore, the radius and thickness of crystal particles should be chosen from 1 micrometer to 3 micrometer.