To enable efficient and uniform ablation of stains and cleaning of targets using laser in the two-dimensional plane, a laser spiral filling path is designed by changing the laser progressive scanning mode in this study. By controlling the galvanometer motor, the laser is deflected to distribute the ablation in a network shape over the plane. At any ablation point in the laser filling field, compared with the line-by-line ablation, the results confirmed a longer cooling time and a weaker laser thermal accumulation during spiral ablation. The line-by-line scanning speed is the motor speed of a single galvanometer, whereas the spiral scanning speed is the vector speed of two motors. Therefore, the effect of laser spiral cleaning is more uniform and effective as compared with the cleaning in the line-by-line scanning mode.