In order to accurately measure the pose of cross-scale wiring target, a method for measuring the pose of cross-scale wiring target based on field of view space reconstruction algorithm and resolution coupling is proposed. Construct the pose measurement model of cross-scale wiring target, calculate the three-dimensional rotation coefficient under different coordinate axes, and extract the pose measurement characteristics of cross-scale wiring target according to the coefficient; Under the coupling of the field of view space reconstruction algorithm and resolution, the velocity recurrence relationship between internal and external parameters is obtained, and the position of three-dimensional point cloud is calculated, and the position and attitude measurement results of cross-scale wiring target are obtained, and realize the field of view space reconstruction algorithm and the position and attitude measurement of scale wiring target under resolution coupling. The experimental results show that there is no deviation between the measured trajectory and the expected trajectory under the proposed method, and the measurement error is obviously low, which can obtain better measurement results of cross-scale wiring target pose.