Abstract: This paper presents Object Detection System of an Autonomous mobile Robot by using Artificial Neutral Network. In this system, the autonomous mobile robot is applied to operate in the Electronics Department ,West Yangon Technological University..A camera is installed at the top of the robot to control the vision based of the robot. Firstly, the position of the obstacles objects is snapped. And to avoid the obstacles along the robot path, the robot must recognize the objects with an artificial neutral network training process.