Abstract: In order to achieve mine successfully transfixion, improving the accuracy and efficiency of transfixion measurement, the authors had used GAT magnetic suspension gyro total station with its precision 5". For example, the GAT gyro station had been used on ground and underground mine to directional measurements and adjustment in Underground Well No. 1 of Anjaling Mine. The results showed that the instrument constant measurement precision was 2. 6" and the biggest difference in azimuth was 5" basis of twice measurements. Compared with Gyromat 2000 gyro total station's measurement data, the azimuth angle difference was only 4". The quant itative analysis indicates that GAT magnetic suspension gyro station has good stability and high accuracy. .