Method for testing orientation precision of gyro total station

The invention discloses a method for testing the orientation precision of a gyro total station. The method comprises the following steps: a, searching three target points A, B and C, and respectivelyerecting prisms; b, erecting the gyro total station at any point P in a triangular area formed by the three target points, carrying out leveling, and ensuring that a gyro north-pointing identifier points to the due north direction; c, sequentially and independently carrying out directional observation on the three target points A, B and C, and calculating values of included angles APB, BPC and CPAof adjacent points; and d, keeping the gyro total station and the three target prism points unchanged, checking an electronic bubble of the total station and confirming centering, by taking a PA measuring line as a reference, performing full-circle method angle observation on the points A, B and C by adopting an angle measuring function of the total station in the gyro total station to obtain delta 1, delta 2 and delta 3,