Abstract: According to the thinking that technical matrix decides industrial structure, this paper gives us the computing method about the reasonable industrial structure in the year that we didn’t draw up the input-output table It also gives us the computing method of forecasting the reasonable industrial structure in the future We uses this method in Shandong province to determine and forecaste the reasonable industrial structure The method is simple and do it easy The computing result is reasonable

Key words: reasonable industrial structure, input-output table, characteristic vector