The detection of mechanical products based on machine vision technology is a development trend in the measurement field. By consulting domestic and foreign machine vision dimensional measurement technology related research literature, review the current research progress on machine vision-based geometric measurement technology. After analysis, it is concluded that the current detection technology lacks the research and development of general geometric measurement systems, the image processing system has obvious time lag, and the accuracy of geometric measurement based on machine vision is not very high. The development strategy of geometric measurement technology for machine vision mechanical products is proposed: follow-up research will increase the development of parts image recognition and classification modules, optimize algorithms, and achieve a higher level of automation and intelligent machine vision measurement; effectively combine other sensors The advantages of complementary performance, through the fusion of multi-sensor to establish a more stable transfer model to eliminate uncertainty; use the results of active vision and other development strategies. Provide a theoretical reference for related research on machine vision mechanical product inspection technology.