The invention belongs to aircraft ground equipment and relates to a compass field center turnplate used for aircraft compass calibration. The compass field center turnplate comprises a pedestal, a thrust self-aligning roller bearing and a turnplate. The pedestal is perfused inside a foundation of a test field, the thrust self-aligning roller bearing is inlaid into the pedestal according to a fit dimension, and the turnplate is then inlaid into the thrust self-aligning roller bearing according to a fit dimension. Thus, the pedestal, the thrust self-aligning roller bearing and the turnplate are combined to form the compass field center turnplate. When the compass field center turnplate is in use, an aircraft's front wheel falls on the turnplate, and the aircraft rotates around the center turnplate for aircraft compass calibration. As for the design of the whole center turnplate of the compass field center turnplate, a stainless steel material is avoided. Structural members are connected by fit dimensions. The influence of a steel material on the magnetic field is eliminated, and calibration accuracy of a compass is raised. In addition, the structure is simplified, and reliability is high.