The invention relates to a nickel-plated diamond production process. The nickel-plated diamond production process sequentially includes a diamond surface titanium plating process, a nickel sintering process and an electro-deposition nickel process; and in the nickel sintering process comprises the steps that (1) the CaSiO3 powder, SiO2 powder, Al2O3 powder and nickel powder are weighed according to the proportion, even mixing is conducted, and the sintered nickel powder is prepared; (2) anhydrous ethanol , butanol and propylene triol are weighed according to the proportion, even mixing is conducted, and adhesives is produced; (3) the surface titanium plating diamond, the adhesive and the sintered nickel powder are weighed according to the proportion, even stirring is conducted, and a mixedraw material is prepared; and (4) sintering is conducted, the mixed raw material is placed in a vacuum sintering chamber, heated to 550-750 DEG C under vacuum conditions and insulated for 10-30 minutes, and the sintered nickel diamond is obtained. The nickel-plated diamond has the chemical bonding between a plating layer and the diamond particles, the surface is prickly and firmly combined with atool matrix, the durability of a tool is improved by improving the bonding force, the plating layer is brittle, and the sharpness of the tool is improved.