The invention provides a method for matrix operation and rigorous wave coupling analysis through a parallel processing architecture, so that a matrix operation and rigorous wave coupling analysis technology which is high in speed and low in cost is provided. The parallel processing architecture comprises a plurality of processor modules which are related to independent shared storages respectively to execute independent thread blocks. The matrix operation method comprises the following steps that i, the processors modules execute operation orders called by the parallel processing architecture respectively, wherein the operation orders are in one-to-one correspondence to operation parts in matrix operation, and the operation parts can be executed in parallel and are not related to one another; ii, data used in the operation parts are read to shared storages of corresponding processor modules respectively; iii, the processor modules read corresponding data in the shared storages based on corresponding operation orders, and execute thread blocks in parallel to complete the operation parts in the matrix operation.