The invention belongs to the technical field of mine detection equipment, and particularly relates to a calibration method of an inclinometer check table. According to the method, an optical fiber gyro is adopted to calibrate the inclinometer check table; with measured data of the optical fiber gyro as the standard, the check table is leveled according to measured data of an optical fiber gyro inclinometer, and then the X-axis bubble and the Y-axis bubble of a bubble level are leveled respectively. The requirement of actual production for check table precision is met, and time and money are saved.