The invention relates to a method for ensuring a shaft furnace device to continuously produce vanadium nitride, belonging to the technical field of vanadium nitride alloy production. The technical scheme comprises the following steps: in the process of vanadium nitride production, evenly mixing raw material balls with a high temperature-resistant addition material before the vanadium nitride raw material balls enter into the furnace, wherein the high temperature-resistant addition material is one of graphite block and coke briquette or a mixture of graphite block and coke briquette; after evenly mixing, continuously adding the mixture into the shaft furnace device from the top of the furnace body for heating and reacting; and operating the raw material balls and the high temperature-resistant addition material from top to bottom, operating nitrogen from bottom to top, discharging waste gas from the furnace top, discharging the material from the furnace bottom, and separating out a finished vanadium nitride product and the high temperature-resistant addition material. In the invention, the finished vanadium nitride product is packaged, and the high temperature-resistant material (graphite block or coke briquette) is recycled. By using the method, the sintering and adhering problems in the process of vanadium nitride production are solved, continuous and smooth discharging in the production process is ensured, and the content of nitrogen in the vanadium nitride is improved, thus the method has the advantages of low production cost, good economic benefits and environmental benefits and the like.