Aiming at the problems of poor performance stability and narrow application temperature range of high temperature accelerometer, the piezoelectric and ferroelectric properties and temperature stability of the sensitive element of the accelerometer are studied directly. The Bi3.94Ce0.06Ti2.98W0.01Nb0.01O12-based piezoelectric ceramics with different contents of Bi2O3 were prepared by the traditional solid-state method. The experimental results show that the oxygen vacancy concentration in the piezoelectric ceramics is effectively reduced by the Bi2O3 compensation doping scheme, on the one hand, the decrease of the oxygen vacancy concentration reduces the pinning effect on the domains and enhances the piezoelectric and ferroelectric properties. The d33 of the sample with 0.6 mol% doping is 35.3 pC/N; On the other hand, the decrease of oxygen vacancy concentration effectively reduces the conductivity of the ceramics at high temperature, which enhances the temperature stability of the ceramics. Excellent piezoelectric properties and temperature stability are the key to ensure high sensitivity and temperature stability of high temperature accelerometer, the experimental results show that the prepared BIT piezoelectric ceramics have great potential in the application of high temperature piezoelectric sensors.。