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MEMS ring gyroscope is an inertial sensor designed to measure angular velocity based on the Coriolis force effect. Its performance is directly related to the driving mode. Hence, according to an innovative method called parameter excitation, the parameter excitation signal is introduced in the PLL-AGC drive control method. The stiffness of the gyroscope changes periodically to suppress the quadrature error signal caused by electrical feed-through and to improve the sensitivity of gyroscope. Research on the effect of parameter excitation, experiments show that the driving signal can be adjusted under the premise of stable response, by changing the parameter excitation signal, and fall by 22.75% in the actual test.