The three-dimensional measurement based on the laser stripe method has the advantages of high precision and fast speed,and the accurate extraction of the laser stripe center is the key of the method.Aiming at the limitation of the universal extraction algorithm,this paper presents a method of Laser stripe Image quality assessment to improve the adaptability of the extraction algorithm and the effect of post 3D reconstruction.Based on the characteristics of the laser stripe image and the analysis of the influence of noise,the evaluation methods of contrast,brightness,sharpness and information amount are proposed respectively,and then the overall evaluation method is proposed,which provides a reliable basis for the adaptive correction of the extraction algorithm.