A three-coordinate measuring system, comprising a three-coordinate measuring apparatus and a type collector for the product to be tested; the three-coordinate measuring apparatus is provided with a probe and a control component configured to control the motion of the probe through a measuring program preset according to the product type, wherein the control component is electrically connected to the probe; the type collector for the product to be tested comprises an optical collecting head capable of scanning a graphic identifier, wherein the optical collecting head is electrically connected to the control component; the control component is adapted to acquire the product type of the product to be tested according to the graphic identifier scanned by the optical collecting head, and to call a corresponding measuring program to control the motion of the probe in order to measure the product to be tested and acquire measuring data, characterized in that the coordinate measuring system is further provided with an identifier printing apparatus configured to print the graphic identifier according to an acquired inspection instruction of the product to be tested, wherein the graphic identifier contains the product type information of the product to be tested and can be pasted on the surface of the product to be tested; and the identifier printing apparatus and the control component are electrically connected, and that the coordinate measuring system further comprises an inspection instruction generating device which generates the inspection instruction according to the warehousing of the product to be tested, and an inspection work order printing apparatus configured to print the inspection work order according to the inspection instruction; wherein the coordinate measuring system is configured so that after the inspection instruction generating device generates the inspection instruction, the identifier printing apparatus and the inspection work order printing apparatus respectively print the graphic identifier and the inspection work order at the same time; the inspection instruction generating device and the inspection work order printing apparatus being both electrically connected to the control component. the type collector for the product to be tested comprises an optical collecting head capable of scanning a graphic identifier, wherein the optical collecting head is electrically connected to the control component; the control component is adapted to acquire the product type of the product to be tested according to the graphic identifier scanned by the optical collecting head, and to call a corresponding measuring program to control the motion of the probe in order to measure the product to be tested and acquire measuring data, characterized in that the coordinate measuring system is further provided with an identifier printing apparatus configured to print the graphic identifier according to an acquired inspection instruction of the product to be tested, wherein the graphic identifier contains the product type information of the product to be tested and can be pasted on the surface of the product to be tested; and the identifier printing apparatus and the control component are electrically connected, and that the coordinate measuring system further comprises an inspection instruction generating device which generates the inspection instruction according to the warehousing of the product to be tested, and an inspection work order printing apparatus configured to print the inspection work order according to the inspection instruction; wherein the coordinate measuring system is configured so that after the inspection instruction generating device generates the inspection instruction, the identifier printing apparatus and the inspection work order printing apparatus respectively print the graphic identifier and the inspection work order at the same time; the inspection instruction generating device and the inspection work order printing apparatus being both electrically connected to the control component.