In order to reduce the waste of human resources, reduce the labor intensity of manual spraying, improve the watering efficiency of potted plants, and realize the intelligentization of potted watering, a mobile flower watering robot has been developed. Its body has a mobile platform and an operating mechanism. The control system adopts an embedded design. It integrates a linear CCD image acquisition sensor, an ultrasonic sensor, a soil moisture detection sensor and a wireless communication module, etc, and realizes autonomous watering of potted plants in the form of line inspection. The kinematics analysis of the mobile robot is performed, and the motion equation is obtained. The experimental results show that the robot runs stably, moves accurately during line inspection and task operation, and can quickly reach the potted plants for watering. The robot has good maneuverability and strong practicability, and plays a guiding role in the development of indoor intelligent service robots.