In order to explore the effect of scanning speed on the microstructure and properties of Ni-based coatings, coatings were prepared by laser cladding technology at different scanning speeds. The coatings were characterized by XRD(X-ray diffraction), Vickers hardness tester and friction tester. The main phases of the coating were found to be ［Fe Ni］ and Fe. The hardness of the coating is obviously higher than that of the substrate. The uniformity of the coating is the best under the scanning speed of 10 mm/s, and the hardness reaches 430 HV. In the friction test, the wear resistance of the coating first increased with the increase of the scanning speed. At the turning point of 10 mm/s, the wear amount of the coating was 51.7 mg, and then the wear resistance of the coating decreased with the increase of the scanning speed. This phenomenon is also similar in hardness testing. The coating with the best performance can be prepared only by the appropriate scanning speed when preparing the coating. The optimal scanning speed in this experiment is 10 mm/s.