Abstract: Linestructured light vision measurement system is an important part of laser scanning probe, and its structural parameters affect the measurement accuracy and reliability of the probe directly. In this study, the linestructured light vision system used in the field of laser scanning probe was researched. The relations between the structural parameters and overall accuracy were analyzed, and an optimization design method was proposed based on the simulation system, and then verified experimentally. The experiment results show that the relative error of two spatial points distance is 0.019 8 mm in the optimized system, and the approach in this study can meet demands of accuracy measurement in the field of majority detection applications.