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Continuous extrusion forming technology has much excellence as high production efficiency, saving energy and so on, however the flowing uniformity of the billet is the key of affecting the product quality of brass alloy rod in continuous extrusion. The flow characteristics of the brass rod billet were obtained based on continuous extrusion process, and then two kinds of forming channel shapes were designed in this paper. The results show that the grain size of the brass alloy rod is fine and uniform after continuous extrusion. For the process of round-table shaped channel, the flow velocity of the billet is nonuniform, the product appears circular microstructure, which make the performance and microstructure of product uneven. For the process of tablecone shaped channel, the flow velocity is more uniform, and the circular microstructure disappears, which make the performance and microstructure of brass alloy rod more uniform. The research results show that the product of brass alloy rod with uniform grain and excellent properties is obtained based on the table-cone shaped channel during continuous extrusion.