Artificial measuring point measurement method is used for measurement in large open-air stockyard because of no carrier installed measurement equipment, which can result in low efficiency, long life cycle, poor accuracy and man-made influence. To solve above problem, telescoping mechanism installation on the vehicle platform is proposed. Laser scanner, inertial navigation, GPS and electronic pan/tilt/zoom (PTZ) are integrated, and partition independent scanning measurement of stockyard and unified coordinate transformation combination are used to quick access to the stockyard 3D coordinate data and to accurately calculate the size of the stockyard enabling reserves converter. Under test conditions, the absolute accuracy is up to 0.4%. Open yard field tests show that the separated ten districts measurement of 8000 m2 can be completed within one hour with the error of repeating measurement less than 0.9%. Field test of mine surveying isn′t taken and the accuracy is lower than the above conclusions based on the device parameters, but it can meet the measurement need of the industry. This method is an effective solution to the measurement problem, and can be widely used in the open yard, mine surveying, with good application and promotion prospects.