The continuing air traffic growth causes the full development and utilization of theoretical construction, methodology research and application practice in airspace, which aims at changing the fixed airspace structure and sector boundaries. The geometry of sectors has stayed relatively constant despite the fact that route structures and demand have changed dramatically over the past decade. Only the dynamic airspace sectorization can accommodate the traffic demands. This paper first analyzes the current theoretical sources of the airspace development and utilization, which includes next generation air transportation system, flexible use of airspace and balanced sector. Second, this paper evaluates changes of methodology and also summaries the transfer from Dynamic Airspace Configuration (DAC) to Dynamic Airspace Sectorization (DAS), 2D-DAS methods to 3D-DAS methods in Dynamic Airspace Sectorization. Then, the paper identifies drawbacks in Agent Based Model (ABM) and proposes improved Agent Based Model (iABM). Finally based on change of airspace utilization, the future expanding of research of geography to airspace is proposed.