The invention relates to a micromechanical gyroscope, in particular to a micromechanical gyroscope bandwidth expanding method based on a dipole compensation method. The method solves the problem that when the micromechanical gyroscope is used, consideration can not be given to the mechanical sensitivity and the bandwidth. The micromechanical gyroscope bandwidth expanding method based on the dipole compensation method comprises the following implementation steps that 1, resonance angular frequency of a drive mode and a detection mode of the micromechanical gyroscope is determined in a frequency scanning mode; 2, according to the result of a frequency scanning test of the drive mode and the detection mode of the micromechanical gyroscope, quality factors of the drive mode and the detection mode of the micromechanical gyroscope are calculated; 3, a dipole compensating controller is additionally arranged in a detection loop of the micromechanical gyroscope; the dipole compensating controller comprises a zero pole generating link and a proportional link. The method is suitable for the micromechanical gyroscope.