Abstract: According to the working characteristics of the axial and tangential force and wear of the pillar of the mine hydraulic support, the hardness and wear resistance of the 27SiMn steel are investigated and analyzed in this paper, and the laser cladding technology is used to modify the surface of the 27SiMn steel. As the laser cladding lap experiment was carried out on the basis of the single channel cladding experiment, the substrate temperature had increased when cladding second channels, and the experimental conditions were slightly different from the single channel experiment. A series of laser single channel cladding experiments were carried out on the 27SiMn steel surface of the base material of the hydraulic column. Compared the test results of the thickness of the single channel cladding layer, the friction and wear experiment and the hardness, the suitable parameters were found on the surface of the base material of the hydraulic prop by 40% lap ratio. The surface characteristics of the lap joint were tested. The hardness of the lap joint was higher than the base. The material is more than 3 times, and the cladding layer is more wearable than the substrate after lap, at the same time, the thickness of the cladding layer is improved effectively. The experimental results meet the needs of the actual processing procedure, and the effective experimental theoretical foundation is laid for the laser cladding after the surface of the hydraulic column.