useful for feeding food to the disabled

The invention relates to a feeding robot arm system, including a processing unit, a robot arm, a range sensor, a feeding switch and a dish-ordering disk. When the feeding switch transmits a feeding signal to the processing unit to perform a feeding process, the processing unit actuates an array type LED of the dish-ordering disk to turn on and off one by one in a marquee manner. When the position of the turned-on LED of the array type LED corresponds to the position of food in a meal tray or a meal box, the processing unit is informed of the position of the turned-on LED of the array type LED, thus acquiring the position of the meal tray or the meal box that is to be prepared, and the processing unit drives the robot arm to the meat tray or meal box to clamp the food and then drives and locates the robot arm in accordance with a predetermined feeding position to feed the clamped food.