Green corridors play important roles in maintaining regional biodiversity, improving environmental quality, offering recreational opportunity as well as protecting heritage and culture, and extensive attentions have been paid to their planning, design and management. However, with the increasing of the content of its concept and functions, the function orientation and its corresponding structure designing have been the key issues and difficulty points in green corridors planning and managements. To solve this problem, this paper studied the function types system and the corresponding structure designing of green corridors. Based upon the complex analysis in green corridor types, a function type system of green corridors was proposed so as to guide green corridors function orientation, the green corridor was functionally classified into four basic types and 22 subtypes. The key issues of planning and designing were analyzed and relevant suggestions were proposed according to the features of different types of green corridors based upon the proposed system, which could provide references to the sustainable planning and management of multiple functional green corridors.