The invention discloses a self-centering ramie splitting combined tool. The self-centering ramie splitting combined tool comprises tool bodies and a tool rest. The tool bodies and the tool rest are connected together. Each tool body comprises a positioning tip, a blade, a ship-shaped splitting head and an unfolded wing, wherein the positioning tip, the blade, the ship-shaped splitting head and theunfolded wing are fixedly connected in sequence. The tool reset comprises an upper cover and a lower U-shaped body. The upper cover is fixedly connected with the upper parts of the two side edges ofthe lower U-shaped body. The tool bodies are fixedly connected with the inner bottom surface of the lower U-shaped body. The tool bodies are located between the upper cover and the lower U-shaped body. The self-centering ramie splitting combined tool is high in ramie splitting efficiency, capable of peeling off fibers conveniently, free of residual ramie sticks, and complete in filter conservation.