This paper expounds the interrelationship between the port logistics and regional economy and analyzes the relativity between Chongqing port logistics and economy based on the grey synthetically relational degree, which reveals that the two are highly relative. According to the level of coordination between the two aspects using the multi-dimension grey GM(1, N) mode, it is drawn that Chongqing port logistics and economic are coordinate as a whole and have a certain development ability, but there are some un-cooperative factors between them. Based on the research result, this paper puts forward suggestions for promoting the development of port logistics, and realizing good interaction between port logistics and regional economy.