Abstract: It is great significance to correctly understand the law of distribution of ground stress in mining area for how to reasonably choose the layout of roadway, the shape of roadway section, the direction of stope movement, the form of support, the supporting parameters, the order of mining, and the method of roof management.This paper used AE method to measure the stress of the Xiaochangba mine, and the direction, size and distribution law of the deep stress was measured.The measurement results showed that the deep stress in the Xiaochangba mining area was relatively high, and it belongs to a high stress state.The increase in depth showed an increasing trend.During the mining of deep ore bodies, ground pressure monitoring should be strengthened and mining projects should be rationally arranged.