Gluing is an important part of automobile production,and its quality directly affects the safety performance of the entire automobile. Aiming at the problems of low precision,high misjudgement rate,and easy detection blind spots in the current glue detection technology,the three dimensional detection technology of automobile glue quality based on line structured light is studied. Focused on the analysis of the choice of the line structured light projection mode and the detection of blind spots in the monocular line structured light measurement method,the overall design of the glue detection system is formulated. Taking the width and thickness of the colloid as the criteria for evaluating the quality of the glue,a method of using three line structured light sensors to measure the colloid in all directions is proposed. According to the performance indicators of the system,the key equipment is selected,the glue quality inspection system hardware platform is built,the influence of the colour of the glue and the amount of glue on the measurement error are studied,and the experiment is verified.