In most laser shock process experiments, the traditional typical laser path is usually in use. The traditional typical laser path is easy to control the laser beam and the multi-axis machining platform, effective to improve the material surface properties. The traditional laser path moves from the start point and goes through straight line and turn back in the next row then continue to full fill the machining area. However, the surface stress distribute is unbalance. The material surface would be destroyed when the outside stress larger than limit of any axis. To make the stress distribution more reasonable, the manuscript discuss the reasons caused the phenomenon. © 2019 Elsevier GmbH