The bulk measurement of the dynamic powders is one of key issues in dynamite charging procedure. A new untouchable measurement method, which adopts Binocular Stereo Vision technique to reconstruct the 3D images, was proposed in this paper. First, the modeling of the vision system, the calibration of cameras and the match field processing of original images were made. Then, with 3D physics engine in OpenGL, the 3D-reconstruction was completed and the calculation of effective pixels was done. In this way, the bulk of the powder was obtained. The result shows that this system is capable of improving the measurement accuracy and overcomes the blind zone in Binocular stereo vision system. Therefore, the system can be widely used in the bulk measurement of the dynamic powders.