With the impacts of global finance crises, great changes have occurred in the system of World City Network (WCN).This article, by tracing the changes, attempts to explore the new trends of WCN and the cause for these changes.The result shows, the rising of medium class world cites led to the new "Bell-shaped" structure of WCN.For the regional attribute, emerging market cities and Asian Pacific world cities showed great enhancement for the rank system of WCN.These new trends, improving the breadth depth of world city system, demonstrated the modification and rebalance of globalization in Post-recession era. <<