The present invention relates to the field of full-automatic code scanning measurement system for express mail, and specifically discloses a full-automatic multi-faceted code scanning, weighing, and volume measurement system for express mail and a processing method thereof, including an automatic transport forklift, a multi-axis manipulator, a bottom-side code-scanning camera, and a side-side code-scanning system. Camera, top scanning code scanning volume measurement camera, scanning code weighing conveyor line and control system, multi-axis manipulators are respectively set at both ends of the code scanning and weighing conveyor line, automatic transport forklifts are used The code camera is set under the working range of the multi-axis manipulator, the side code scanning camera is correspondingly set on the side of the working end range of the multi-axis manipulator, and the top scanning code measuring volume camera is correspondingly set at the side of the code scanning weighing conveyor line Above, the control system controls the operation of the whole machine, and a gravity sensor is installed on the code scanning and weighing conveyor line. This system changes the traditional conveying method, and realizes automatic express processing such as multi-faceted code scanning, weighing, and volume measurement, and has high work efficiency, compact mechanical structure, and stable work.