The invention discloses a coaxial CCD (charge coupled device) imaging system applied to laser cutting, which belongs to the field of optoelectronics and can be applied to laser machining such as laser cutting, laser drilling and the like. The coaxial CCD imaging system comprises a low-power CCD imaging component, an upper high-power CCD imaging component and a lower high-power CCD imaging component which are used for imaging a workpiece on the same optical axis; laser enters horizontally and is focused on the workpiece for machining after being collected by a focusing lens group and reflected by a 45-degree laser total reflector; and the three CCD imaging components are used for coaxial imaging by means of laser machining. The three CCD imaging components need no special design and can adopt mature lens groups on the market, the imaging requirement of LED wafer laser cutting on high precision can be met, equipment cost is greatly reduced, and the coaxial CCD imaging system is of important significance for improving economic benefits of equipment manufacturers.