The invention belongs to the technical field of resource recycling, and particularly relates to a technology method for electroplating extraction of fine nickel from nitrogen trifluoride nickel slag.The method comprises the technology steps that ammonium hydroxide is added for ammonia leaching of waste slag for iron removal, calcium oxide is adopted for fluorine removal, a QT copper removal agentis adopted for copper removal, and nickel electroplating is conducted, and electroplating extraction of the fine nickel from the nitrogen trifluoride nickel slag is achieved. According to the technology method for electroplating extraction of the fine nickel from nitrogen trifluoride nickel slag, nickel plates corroded during nitrogen trifluoride preparing are electroplated, the pure nickel withthe purity reaching 99% or above is recycled, further electroplating is conducted so that nickel plates can be formed, and the cost for preparing the nitrogen trifluoride is reduced by 40% or above; and the problem that in the nitrogen trifluoride preparing electrolysis process, the nickel plates are corroded and thinned, and a large number of nickel plates are abandoned is solved. Through the method, the nickel plates can be effectively plated to be thick again, the nickel plates can be circularly used, cost is reduced, environment friendliness is achieved, public hazards are avoided, and huge economic benefits are created.