The invention relates to a loading-riveting integrated rotary mechanism comprising a rotary platform with an axis connected with a rotary shaft, and two pressurization devices fixed on a same side of the rotary platform; the periphery of the rotary platform is provided with a plurality of rivet heads; the rivet head comprises a top plate and a bottom plate arranged on two sides of the rotary platform; the top plate and the bottom plate are connected through at least one cylinder sleeved with a spring; the cylinder penetrates the rotary platform; two ends of the spring respectively abuts against the bottom plate and the top plate; the bottom plate is provided with a rivet nozzle. The rotary platform is provided with the rivet heads so as to suck nuts for loading on one hand, and the nuts can be pressed in a housing on the other hand; when the rotary platform stops, the rivet head on one side sucks the nuts, and the rivet head on the other side rivets the nut in the same time; then a preset angle is rotated for the following suction and riveting.