There are both a linkage relationship and economic distances between sectors in the national economic system． The linkages between sectors show their interconnection，and their economic distance reflects their intermediate production links． This paper synthesizes the advantages of the average production lengths model and relevancy of input-output method，and constructs a regional industrial linkage and economic distance model，including the forward linkage and economic distance index and the backward linkage and economic distance index． Then，we calculate these indexes according to eight-regional-input-output table for China in 1997，in 2002 and in 2007． The results show，from the viewpoint of the primary inputs of upstream industry，that the greatest interconnection and the minimum economic distance is from the sector of mining to the sector of electricity and heating power production and supply; and from the point of the final demand of the downstream industry，that the greatest interconnection and the minimum economic distance is from the sector of electricity and heating power production and supply mining to the sector of heavy industry or the sector of construction during the period from 1997 to 2007 either intra-region or inter-region． We find there are greater interconnections in intra-region than inter-region for the upstream and downstream industries of the sector of electricity and heating power production and supply，and the greatest spatial energy interconnection takes place in the vicinity of most of the eight regions because of spatial costs．