The 55NiTi+5Ni coatings are successfully fabricated on the 316L substrate via laser cladding, which provides the possibility to use mixed 55NiTi and single Ni powder to replace 60NiTi alloy powder. The effects of Ni addition on the microstructures and properties of 55NiTi coatings are investigated, and the following conclusions can be drawn. The addition of Ni leads to smaller and denser microstructures, and the average grain size reduces by about 20%. NiTi and Ni₃Ti are the major phases in the coatings, which exist in eutectic with lamella form. The proportion of Ni₃Ti phase in the coatings has been improved with the addition of Ni. Wear resistance has been improved, the hardness of the coatings reaches 830 HV which is 7.2% higher than that of the 55NiTi coating, and the wear mass loss is reduced by 10%. The 55NiTi+5Ni coating shows excellent corrosion resistance, the corrosion current density and corrosion rate are reduced 50% compared with those of the 55NiTi coating. The enhancement of the coating surface properties is mainly attributed to the increase of the second phase proportion and the solid solution strengthening effect caused by the addition of Ni.