The invention discloses a method for recycling sintered neodymium-iron-boron waste. The method includes the following steps of 1, waste classifying; 2, surface zinc removing; 3, surface oil removing;4, waste breaking; 5, hydrogen breaking; 6, airflow mill powder grinding; 7, briquetting sintering; and 8, aging treatment. According to the method for recycling the sintered neodymium-iron-boron waste, the use ratio of the waste can be effectively increased, consumption of the waste is accelerated, the inventory cost is reduced, the product quality is guaranteed, neodymium-iron-boron magnets withdifferent properties can be prepared effectively by adjusting the ratios and varieties of rare earth metal blocks, the application range of the waste is widened, a sealing plate can be effectively pushed through granular materials injected into a mixing device to rotate to inject an antioxidant and a lubricant quantitatively, thus, the processed particles are fully wrapped by the antioxidant andthe lubricant effectively, the granular materials are prevented from being oxidized during following machining, and the influences on the performance after the waste is recycled are reduced.