3D scanning reconstruction technology has been widely used in many fields for the advantages of fast data acquisition, high measurement accuracy and non-contact measurement. In order to apply 3l) scanning technology to experimental teaching better and help students understand and master the technology more comprehensively ,we simplified its complex structure , distilled the most core part of the system , and designed and developed a binocular 3l reconstruction system design based on line laser scanning. The system uses Matlab as the software development platform, and combines the line laser, industrial camera, 20) electronic control platform and computer to build the whole system hardware platform, which realizes the automatic 3l)data acquisition and image reconstruction of objects , and improves the visualization and manipulability of the3l) scanning process. The experimental results show that the system is easy to operate and has high measurement accuracy , which can better meet the requirements of scientific research tests and teaching expermments.