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During the flight of high spin ammunition, high speed of the axial angular rate makes it difficult to test. To solve this problem, we propose an axial reduction gear transmission, and introduced its principle and implementation methods. Through the structure and function of the instructions internal silos and driver positions, explained the realization axial reduction gear device. The device can provide high-spin stabilized ammunition during the flight test environment, resulting in more accurate solver results provide a new way to measure the position of the high spin ammunition stance, with some military application.