The Mine MWD Trajectory Measuring Device is an intelligent MWD trajectory inspection device mainly composed of a nonmagnetic drill pipe, a probe tube and a mining smart phone. The probe tube is installed in the nonmagnetic drill pipe, and the two ends of the nonmagnetic drill pipe are respectively connected with the drill pipe and the drill bit in the mine, so that the space trajectory and drilling depth of the borehole can be measured while drilling. The probe tube communicates with the mining smart phone through Bluetooth. The property information of each borehole is obtained when drilling starts. After drilling completes, the data stored in the probe tube memory will be transmitted to the smart phone, and the space trajectory and depth of the borehole will be displayed on the spot through the mobile terminal software. The drilling depth can be measured through the mobile phone terminal software by counting as the drill pipe advances, and can also be measured automatically through the depth sensor placed in the probe tube, without manual intervention, truly eliminating fake drilling and invalid drilling.