Abstract: This paper discusses different points of view about the concept of ecological sensitive area and proposes that the green field should be included in the conception of urban sensitive areas to prevent the irregular expand of urban.Based on this conception,the ecological sensitive areas are classified into five types namely ①nature-protection type,②environment-improvement type,③field-control type,④pollution-effect type and ⑤resource-reserve type.As a case study,the types of eological sensitive area in Pudong New Area were classified and the suggestions on the consrtuction of ecological sensitive area were put forward.

Key words: urban area, definition and Types, Pudong New Area in Shanghai, ecolgical sensitive area, urban area, definition and Types, Pudong New Area in Shanghai