This paper illustrated the derivation, evolution and effect of the concept of green infrastructure. It demonstrated the systematic development, as well as principles and procedures of planning and design of foreign related theories. It specifically addressed the standards and methods of the identification of green infrastructure land and then set protection priorities of it, aiming to provide some inspirations for the ecology land use and protection of our country by introducing the new concept and predict future research directions and contents. It’s also indicated that green infrastructure played a significant role in protecting urban land and promoting urban sustainable development.