Aiming at the problems of current armored vehicle oil detection is mainly based on off-line detection, the system for on-line detection of armored vehicle lubricating oil is developed. Oil condition monitoring system is designed on CAN bus intelligent monitoring platform, the monitoring system is proposed, and its software and hardware is designed based on CAN bus, the armored vehicle oil properties and conditions is monitored and analyzed under real driving conditions. Analysis results show that the system could monitor the oil running state effectively, the status of oil is grasped timely, and provide data and technical supports for daily use, maintenance and replacement of oil, and vehicle detection.