In order to meet the need of high pointing accuracy of fast steering mirror in photoelectric system, the two-dimensional Angle calibration technology of fast steering mirror based on eddy current sensor is studied. The working principle of two-dimensional Angle measurement using eddy current sensor is analyzed, and a fast steering mirror Angle calibration system is designed. Two calibration models, polynomial fitting and bilinear interpolation, are analyzed theoretically and tested experimentally. The results show that the calibration error of the bilinear interpolation method is within 2″ in the angle range of ±1 000″, which is higher than the traditional calibration accuracy of the polynomial fitting method. The improvement of calibration accuracy is of great significance for realizing high precision pointing of fast steering mirror.