Taking the bottom pivot’s mushroom head and shaft of 34 m-entrance wedge gate in Yuxi first-line ship lock expansion and reconstruction project as a study case,we carry out comparative research on different base materials and laser cladding powders from the macroscopic metallography,microstructure,X-ray diffractometer,the surface hardness of the cladding layer, and the corrosion resistance of the specimen tested by the salt spray test machine. The results show that Ni40 powder and Co40 powder have high hardness and excellent corrosion resistance,which can meet the performance requirements of laser cladding. Compared with the other two materials,Fe40 has different properties and is not suitable for laser cladding powder.