Taipei’s old urban core has shown population shrinkage since 1990. Despite an extremely low birth rate in this country, promoting urban redevelopment based on a growth scenario is still more favoured than a degrowth one by the authority. Given the context, integrating green infrastructure (GI), which can secure a green space system that provides multiple life-supporting functions and services, and urban redevelopments (UR), which can sustainably accommodate growing population without consuming extra natural environment, seems to provide a sustainable solution.This article, thus, focuses on revealing what challenges, regulatory in particular, this strategy can encounter in Taipei’s old urban core, which is already densely populated and its development is driven by an urban growth model. By adopting a case study strategy, it firstly reviews key urban policies and regulations in relation to the integration. Based on a map identifying green spaces and redevelopment projects, it exemplifies how these two spatial elements interact. It finally draws concluding remarks on the regulatory impediments to creation of GI elements in these redevelopments as well as policy lessons for adopting the integrative strategy in densely populated cities. 自1990年起，台北舊城區已開始呈現人口縮減的現象。儘管全國的生育率十分低，比起去成長型的都市發展願景，規劃當局依然偏好以都市成長為願景，據以推動都市再開發。在這樣的背景下，整合綠色基盤設施與都市再開發，似乎能夠提供一個較為永續的解決辦法。一方面保全綠地系統，提供支持生命的多重功能和服務，另一方面能在不開發自然環境的狀態下，容納預估的成長人口。本文以台北舊城區為例，呈現出在的高密度環境及都市成長引導的發展模式下，若要施行這項整合性策略，將可能面臨哪些挑戰，特別是法規層面。本研究採用個案研究法，首先回顧與該策略相關的關鍵性都市政策與規範。接著，從空間上指認出綠地和再開發案的位置，呈現出綠地和再開發基地之間的空間關係。最後，歸納再開發案中創造綠色基盤設施元素會面臨的法規限制，並且提出政策發展上的建議供高密度城市施行整合性策略之參考。
