This paper introduces the basic principles of machine vision technology and composition,combined with the current commonly used in the tobacco industry and small,bar bag packaging quality control system introduced machine vision system software and hardware.Proposed by using machine vision technology for small packets,as amended,removing the technical flaws in the package in addition to the rate and in addition to full-rate concept.Lists the packaging machine vision quality inspection in the tobacco industry in the typical application.That the quality of machine vision technology in the detection of tobacco in the future direction of development.