Abstract:A three axis calibration table was designed which can calibrate the three axis of three axis accelerometer simultaneously. According to the three point leveling principle, the calibration table achieved adjustable feature by using stepper motor and laser interferometer, which can reduce the coupling error of three axis calibration table and machining accuracy of each parts, and improve precision of the calibration. A new decoupling method was put forward, which solves the problems existing in the decoupling method at present, and facilitates the installation and replacement of parts.