The invention relates to a metal bar material conveying device and an application method thereof, belonging to the technical field of alloy production raw material conveying machinery. The device comprises an electric control part, a fixed guide rail, a moving mechanism and a blocking mechanism; and the application method of the device enables the device to achieve the function of controlling the speed of materials in the first row and discontinuously actuating materials in the second row and the whole material pile thereafter. By organically combining the supplied material conveying and the automatic feeding, the device omits the intermediate manual link, extends the automation procedure, can simultaneously be extended to other industries in which the automatic bar material conveying is necessary, and is especially applicable to the bar material of which the ratio of length to diameter is less than 2.