在全球民營化的風潮中，臺灣地方政府已推動設置有32所公辦民營托兒所。本研究採個案研究，運用相關人士訪談、機構文件檔案、家長問卷與幼兒學習環境量表蒐集之資料，探究「臺北市政府社會局委託社團法人臺北市親子成長協會辦理吉利托兒所」的經營歷程。從承辦單位如何履行契約書中的教保服務內容，如何形塑教保品質與獲得哪些內/外在評價，以理解公辦民營幼托政策對幼托機構形塑教保品質的影響。研究結果分別從（一）過程評估觀點談公私協力關係中的曖昧現象；(二) 從建構整體教保服務生態品質觀點，論述公辦民營幼托政策於推動幼托機構設置的合理性。 / There has been a rapid growth in “privatization” over the past decade around world. Under the trend of global privatization, currently there are a total of thirty-two such publicly-funded, privately-managed day care centers in the fifteen counties of Taiwan. The purpose of this research is to inspect the influence of the Public-Private Collaboration Model on the quality of the early childhood programs. This research focuses on a case study of a publicly-funded, privately-managed day care center in Taipei in order to answer three research questions: how to implement contracts ,how to promote high-quality care in the process of managing, and what kind of outcome was achieved. Tools to collect data included interviews, documentation, questionnaires, and the Early Childhood Environment Rating Scale-Revised (ECERS-R). According to the result, the paper discusses the ambiguous relationship between the government and the day care center from the viewpoint of process evaluation, and the rationality of the Public-Private Collaboration Model for the quality of early childhood care and education.