為避免政府公部門人員、司法人員、民間機構，誤將「採購法」及「促參法」辦理程序相互錯置引用；本文以比較兩法內容差異後，期能讓公部門人員勇於任事、司法人員避免誤判、民間機構積極參與公共建設為目的；藉由文獻回顧及比較研究法，首先探討兩法之立法與修法過程，以及兩法相互錯置引用情形，其次就兩法之立法精神、公開程序、保密措施、民間參與、興利與防弊等條文內容作比較研究，以釐清兩法差異性提供政府機關推動民間參與公共建設計畫及政府機關辦理採購之參考。最後總結兩法本質上並不相同，不宜相互適用，以避免混淆誤用法條。採購法在不違反防弊、保密及公平機制之原則下，為減少招標及履約爭議，建議招標文件於公告前得辦理公開說明會，以主動積極徵求廠商或民眾意見。促參法則為政府招商行為，需積極落實公開透明機制以吸引潛在投資者，創造政府最大利多，並加強促參人員之專業素養，以落實公私互信合作，促進民間最大的參與。

Governmental staff, judicial officers, and private business owners should avoid erroneously misapplying the Government Procurement Act and the Act for Promotion of Private Participation in Infrastructure Projects. This study examined the literature review and conducted a comparative analysis of the legislation processes related to the Act for Promotion of Private Participation in Infrastructure Projects and the Government Procurement Act. The differences between these two acts as well as the government's promotion of private participation in infrastructure projects were explored by investigating the spirit of the laws, open procedures, security measures, private sector participation, and measures that promote public interest and prevent fraud. In conclusion, because the historical background, legislative purpose, implementation procedures, transparency, and confidentiality regulations are fundamentally different between the two Acts. Executives should avoid erroneously misapplying laws.