Traffic has great effect on economic proliferation.This paper uses economic distance to study metropolis circle structure at Yangtze River delta area.Based on current relationship between traffic axle and economic proliferation circle,the author insists that Yangtze River delta still is in the "it" font shafting systematic structure.The evolution of the shafting systematic structure will make the future trend towards the structure of the network system.So,the construction of macrozonality traffic system structure of Yangtze River delta area metropolis circle should be implemented.