Abstract: In recent years, machine vision technology, which is fast, accurate, objective and nondestructive, has been widely used in the external quality detection of agricultural products to solve the problems of high cost and low efficiency in manual detection. In the process of processing and circulation of jujubes, external characteristics are important factors affecting their quality. Rapid and accurate detection of external quality of jujubes can effectively guarantee food quality and safety and improve production efficiency of enterprises. In this paper, the application of machine vision technology in the external quality detection of jujubes is reviewed. The characteristics, existing problems and development trend of machine vision inspection methods are summarized according to defects, size, texture, color and comprehensive external quality, which provides reference for the research and development of efficient and rapid detection and grading equipment of jujubes in China.