Abstract: In order to correct the edge deviation of the line laser sensor in profile measurement, an edge deviation correction method was proposed. This method established a hybrid denoising model based on Manhattan distance and Chebyshev distance by analyzing the main error sources of edge deviation, and have achieved the filtering of spurious noise. In addition, the error model of line laser profile measurement was compensated by the least square. In order to verify the effectiveness of this method, the nominal size of the gauge block was used as an evaluation index to carry out measurement and calibration experiments. The experimental results show that the correction method has a significant effect on filtering stray noise. Among them, the uncompensated size measurement error is 0.43 mm, and the size measurement error is compensated is as small as 0.04 mm after the correction method , which is an order of magnitude lower than the former. Therefore, this method can effectively correct the edge deviation and improve the profile measurement accuracy of the line laser sensor.