The invention discloses an efficient vanadium-nitrogen alloying pellet tunnel kiln automatic charging device comprising a feeding guide pipe, a conveying belt and a sieve barrel. The sieve barrel is mounted on the upper portion of a base through a limiting wheel and a gear box, and a limiting strip is arranged on the position, corresponding to the limiting wheel, of the sieve barrel; a gear stripis arranged on the position, corresponding to the gear box, of the sieve barrel; an alloying pellet discharging outlet is formed in one end of the sieve barrel; and a driving motor is arranged on oneside of the gear box, the feeding guide pipe is mounted at the other end of the sieve barrel, and the feeding guide pipe is fixedly mounted on the upper portion of the base through a guide pipe supporting frame. According to the efficient vanadium-nitrogen alloying pellet tunnel kiln automatic charging device, chippings on a vanadium-nitrogen alloying pellet are separated through rotating of the sieve barrel and recycled, pollution caused by dust is reduced, and meanwhile, the production cost is also lowered; and the vanadium-nitrogen alloying pellet is conveyed into a calcining kiln through the conveying belt, thus automatic, continuous and quick charging is achieved, most of labors can be replaced, and the production efficiency is improved.