The invention discloses a conveying block of a full-automatic nut flattening forming machine. The conveying block comprises a conveying block body. A conveying channel is arranged on the integral upper surface of the conveying block body, a first rail lug and a second rail lug are respectively arranged on two sides of the conveying channel, a first stepped surface and a second stepped surface are respectively arranged at the right end of the first rail lug and the right end of the second rail lug, a fixing rod groove is formed in the second stepped surface, a push block groove is formed in a position close to a side surface of the conveying channel, and a lower die block fixing cavity is arranged below the right end of the conveying channel. The conveying block has the advantages that the conveying block is used in a conveying mechanism of the full-automatic nut flattening forming machine and is matched with a conveying rail, an ejector pin and a lower die block, so that nuts can be conveyed, problems that nuts are easy to jump out of an existing conveying rail and are difficult to position in pushing procedures can be solved, the conveying efficiency can be improved, and the conveying block is convenient and speedy.