A die casting device comprising: a die that includes a cavity; an injection sleeve that includes a feeding orifice and communicates with the cavity; a support shaft; an injection tip provided at a distal end of the support shaft, the injection tip being configured to be slidable in an axial direction within the injection sleeve by inserting the support shaft into the injection sleeve; a decompression device (21, 22) that communicates with the cavity; a molten-metal holding furnace that includes a space to store molten metal; a pump that pumps up the molten metal from the molten-metal holding furnace; a relay pipe that includes a vibration absorption portion; and a feeding pipe (41, 42) including an upper feeding pipe and a lower feeding pipe, a first end of the upper feeding pipe is connected to the pump, a second end of the upper feeding pipe is connected to a first end of the lower feeding pipe and a second end of the lower feeding pipe communicates with the feeding orifice, the feeding pipe (41, 42) being joined to the injection sleeve through the relay pipe, wherein the upper feeding pipe is inclined downwards toward the injection sleeve and a portion of the lower feeding pipe passing through the relay pipe is perpendicular to the feeding orifice, the vibration absorption portion is provided on a connection between the second end of the upper feeding pipe and the first end of the lower feeding pipe, the molten metal is fed into the injection sleeve from the molten-metal holding furnace through the feeding pipe (41, 42) by the pump, and the fed molten metal is pushed out of the injection sleeve by the injection tip so that the molten metal is injected into the cavity decompressed by the decompression device (21, 22). a die that includes a cavity; an injection sleeve that includes a feeding orifice and communicates with the cavity; a support shaft; an injection tip provided at a distal end of the support shaft, the injection tip being configured to be slidable in an axial direction within the injection sleeve by inserting the support shaft into the injection sleeve; a decompression device (21, 22) that communicates with the cavity; a molten-metal holding furnace that includes a space to store molten metal; a pump that pumps up the molten metal from the molten-metal holding furnace; a relay pipe that includes a vibration absorption portion; and a feeding pipe (41, 42) including an upper feeding pipe and a lower feeding pipe, a first end of the upper feeding pipe is connected to the pump, a second end of the upper feeding pipe is connected to a first end of the lower feeding pipe and a second end of the lower feeding pipe communicates with the feeding orifice, the feeding pipe (41, 42) being joined to the injection sleeve through the relay pipe, wherein the upper feeding pipe is inclined downwards toward the injection sleeve and a portion of the lower feeding pipe passing through the relay pipe is perpendicular to the feeding orifice, the vibration absorption portion is provided on a connection between the second end of the upper feeding pipe and the first end of the lower feeding pipe, the molten metal is fed into the injection sleeve from the molten-metal holding furnace through the feeding pipe (41, 42) by the pump, and the fed molten metal is pushed out of the injection sleeve by the injection tip so that the molten metal is injected into the cavity decompressed by the decompression device (21, 22).