The invention discloses a neodymium-added Nd-Fe-B permanent-magnet material chemical plating solution and a use method. In the plating solution, nickel vitriol is used as the main salt, sodium hypophosphite is used as the reducer, sodium citrate or malic acid is used as the complexing agent, sodium acetate is used as the buffering agent, potash iodate is used as the stabilizing agent, and a small amount of neodymium is added. The use method comprises the following steps: the pH value of the chemical plating solution is adjusted by 5% to 10% of sodium hydroxide solution or ammonia to 9 to 10, the optimal pH value is 9 to 9.5, the plating solution is heated to 70 DEG C to 85 DEG C, the optimal constant temperature is 80 DEG C to 85 DEG C, oil-removed and activated Nd-Fe-B magnet is dipped into the plating solution, then a plating layer is acquired. According to the invention, because of the strong adsorption capacity, neodymium is aggregated on the surface of the magnet, the corrosion of neodymium-rich phase is inhabited, and the deposition speed is improved, the bonding force of the surface coating of the Nd-Fe-B magnet is obviously increased. In addition, coating got by the method has superior corrosion resistance, and the technical difficulty of poor bonding force of the surface coating of the Nd-Fe-B magnet is solved.