The invention relates to a riveting pneumatic rivet feeding device, and belongs to the technical field of aviation manufacturing. The riveting pneumatic rivet feeding device comprises a cylinder bodyassembly, a rivet feeding device and a driving device, wherein the cylinder body assembly comprises a cylinder body, an end cover, a rivets loading device and a clamping device, wherein one end of thecylinder body is connected with the end cover, and the other end of the cylinder body is connected with the clamping device; one side, close to the end cover, of the interior of the cylinder body isarranged with a piston cavity, a rivets installing and ejecting device is arranged in the piston cavity, and the rivets installing and ejecting device is used for ejecting rivets in a rivet feeding channel into the clamping device; the rivet feeding device is arranged above the cylinder body and communicates with the cylinder body, and the rivet feeding device is used for feeding the rivets into the rivets feeding channel; the driving device comprises an air pump and an electromagnetic valve, the driving device penetrates through the end cover to communicate with the piston cavity, and is usedfor driving the rivet installing and ejecting device; and the driving device communicates with the rivet feeding device and is used for driving the rivet feeding device. The riveting pneumatic rivetfeeding device is compact in structure, safe, reliable and easy to operate, the riveting efficiency can be improved, and the rivets can be accurately fed into a mounting hole.