Abstract: With the improvement of intelligent production and manufacturing, the number of FANUC robots is constantly increasing. In order to ensure the stability of the equipment during long-term operation, the maintenance and upkeep of the robot cannot be ignored. Based on the built-in KAREL language of FANUC robot, the maintenance reminder function has been successfully designed and implemented through analysis of maintenance reminder requirements, function design, routine design, experimental testing, etc. It maintains equipment stability, and improves production efficiency.