An object pose measurement system based on MEMS IMU includes: an accelerometer, a magnetometer, a gyroscope, an object vector information calculation unit, and a rotation compensation unit; wherein the object vector information calculation unit is connected respectively to the accelerometer, magnetometer, gyroscope to receive respective measurement data and calculate object vector information; the rotation compensation unit is connected to the object vector information calculation unit to receive the object vector information, compute and output rotation compensated object vector information; wherein the rotation compensation unit performs quaternion rotation compensation computation and outputs the rotation compensated quaternion as the rotation compensated object vector information.
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