Cement rotary kiln operates at slow speed under heavy load under high temperature and the level of accessory equipment maintenance and thermal system control is related to the efficiency of rotary kiln operation. The lubrication running state dynamic detection and meshing accuracy of the large and small gears of the maintenance equipment of the transmission device; the installation accuracy of the supporting device determines whether the rotary kiln can run reliably or not. In operation attention should be paid to the reasonable control of the load distribution of each gear supporting wheel the arrangement form of the supporting wheel the upward and downward pressure and time of the hydraulic retaining wheel the force acting on the supporting wheel and the gap between the wheel belt and the cushion plate. The quality of the sealing device has a direct impact on the thermal system and operating cost of the rotary kiln. Strengthening the daily maintenance data collation and analysis of rotary kiln is beneficial to the management of equipment.