Abstract: Taking construction of automation system of one coal mine as example, the paper proposed a design scheme of auxiliary decision support system of coal mine production based on mass data analysis. The system makes convergence statistic analysis of subsystems and integrated statistic analysis of whole system through fusing data collected by various sensors to judge states of health status, fault and operation energy consumption of various electromechanical equipments in coal mine production process, so as to realize auxiliary decision support of coal mine production. The actual application showed that the system runs well and improves production efficiency and management level of coal mine.