The invention discloses a graphic calculation iteration processing method based on SCC-DGA. The method comprises the processing step and the calculation step; specifically, in the stage of preprocessing, all SCCs in a given graph are obtained, and the SCC-DGA is constructed through connection among the SCCs; in the stage of calculation, according to the topological sorting of the SCCs in the SCC-DGA, iteration is performed inside the SCCs of the SCC-DGA in sequence till convergence of all the SCCs is achieved, and data in the convergence status is output as a computational result of a corresponding algorithm. According to the graphic calculation iteration processing method based on SCC-DGA, iteration processing is defined inside the SCCs, and iteration operation is performed independently inside each SCC; when all the SCCs inside the SCC-DGA are subjected to convergence, the whole graph is in the convergence status; according to the graphic calculation iteration processing method, the low preprocessing cost is needed for increasing the graph convergence speed, calculation redundancy is reduced, and the IO resource cost is lowered.