Abstract: In order to mine coal under the high-voltage line tower and protect the safety of the high-voltage line tower. With the method of combining the prediction of ground movement and deformation with the field measurement, this paper analyzes the subsidence, subsidence speed and inclination of the high-voltage transmission line tower caused by mining, and studies the safety of the high-voltage transmission line tower under shallow, deep and high-intensity mining. The research results show that the deformation value of the high-voltage transmission line tower will exceed its allowable deformation value after the mining of the working face, and there are safety risks in the operation of the high-voltage transmission line, so safety measures must be taken. The distance from the working face to the center of the tower is about 92 m, and the sinking speed of the tower is the highest. As the distance between the working face and the center of the tower increases, the sinking speed of the tower gradually decreases. Through regular inclination adjustment and reinforcement of the tower, the safe coal mining under the high-voltage transmission line tower is realized, and the high-voltage transmission line tower has successfully passed the active period of ground movement. The high-voltage line and tower operate well during the mining impact period, producing good economic and social benefits.