The invention discloses a method for producing vanadium nitride through a pushed slab kiln. The method includes the following steps that 1, excessive iron powder is added in the material preparation process; 2, charging is carried out, wherein green pellets are charged into square charging buckets and round charging buckets put on a production line in a proportionally-mixed mode; 3, reduction nitridation is carried out, wherein the charging buckets pass through various temperature zones in the kiln after entering the kiln, the temperatures of the temperature zones and the flow of introduced nitrogen are controlled, the kiln cavity pressures at the kiln head, the kiln middle and the kiln tail are controlled, and a vanadium nitride product is obtained. According to the method, by increasing the catalyst proportion, changing the charging mode and adopting kiln temperature, nitrogen flow and kiln pressure synchronous coupling control, the quality and yield of vanadium nitride are effectively improved, the discharging speed is increased, the reaction time is shortened, and dual improvement of the yield of vanadium nitride produced through the pushed slab kiln and the product quality is achieved.