As the development of computer and machine vision technology, the rapid, accurate and intelligent characteristics of computer vision technology are widely used in the field of industrial detection. The three main applications of machine vision are measurement, guidance and inspection. The visual measurement technology can ensure the qualified products of the factory by measuring the key dimensions, surface quality and assembly effect of the product. The visual guidance technology can significantly improve manufacturing efficiency and body assembly quality by guiding the machine to complete automatic handling, optimum matching assembly and precise drilling. The visual inspection technology can monitor the stability of the body manufacturing process, and can also be used to ensure the integrity and traceability of the product to reduce the cost of manufacturing. Predictably, with the performance improvement of the core hardware such as cameras, lenses, computer and the development of software technology such as image processing and deep learning, machine vision technology will play a more important role in all areas in the future and there will be a wider space for development.