The invention relates to an automatic rice noodle preparing system and a method for using the same. The system comprises a frame, a conveyer belt, a master control device, a dosing device, a bowl feeding device, a noodle cooking device and a flavoring device, wherein a noodle-griping manipulator, arranged on a portal frame, of the dosing device can move in three directions; two arms of the noodle-gripping manipulator unfolds and folds to grip quantitative rice noodles in each segment inside a rice noodle box; a vertical shaft, a transverse arm and a front arm of a noodle cooking manipulator of the noodle cooking device rotate to realize the longitudinal and transverse movement and turning of a cooking spoon; a swing arm and a noodle stirring arm of a noodle stirring manipulator of a noodle cooking bucket rotate to realize the vertical movement and rotation of a noodle stirring stick; bowls at the top of a screw rod connected with a bowl feeding motor of the bowl feeding device can be fed onto the conveyer belt and attracted by a magnet; the flavoring device comprises a plurality of flavoring buckets and brine buckets; a feeder and an electromagnetic valve add the rice noodle quantitatively; and each motor and each position monitor are connected with the master control device. The method for using the system is that: the master control device automatically completes a whole preparation process consisting of a rice noodle dosing step, a noodle cooking step and a flavoring step under program control according to the requirements of an ordering table and a position monitoring signal.