This paper presents a mechanical sensitivity improvement of the disc resonating gyroscope by optimizing the allocation of the resonant ring wall thickness by using structural optimization method.First,the qualityfactor,resonating frequency,effective mass,and angular gain of the disc resonating gyroscope are calculated based on COMSOL with MATALB.Then the mechanical sensitivity is estimated.The mechanical sensitivity is treated as the objective,and the method of moving asymptotes is implemented to optimize the allocation the resonant ring wall thickness.The result indicates that the mechanical sensitivity has been increased by 20% through optimizing the allocation of the wall thickness.