Abstract: For the present large and modern open-pit with large-scale equipments and high degree of modernization,the efficiency of most mines' equipment has not been fully developed,which affects the economic benefits of mining.Factors affecting the efficiency of the device are management and equipment operation and maintenance.Through small-scale manual calibration of local production of one work shift in domestic open-pit mine site,the factors of restricting open pit truck transportation and production efficiency are analyzed,which provides data support to enhance mine productivity efficiency.