我國通說認為，公共工程契約於契約締結後，乃為私法關係，亦即所生之履約爭議乃為民事爭議1。筆者過去參與仲裁實務之經驗中，公共工程所生之履約爭議，有關契約條款內容之解釋，當事人所持之看法經常是南轅北轍，頗令人詫異。因而，令人心中產生一個疑問，那就是一般契約解釋原則為何？又公共工程契約應如何解釋？基於解決上述之疑惑，本文則從民事契約解釋原則為出發點，兼論公共工程契約解釋，來探討此學理及理論之重要課題。

After the conclusion of the public construction contracts there are a relationship of the private law between the parties. The dispute of the public construction contract is a civil dispute. In arbitration practice, the parties of the contract dispute often have very different views for the interpretation of the contract. So we have to ask, why the general principles of contract interpretation? So it is questioned, what are the general principles of contract interpretation? How should the public construction contract be interpreted? The main purpose of the paper is to solve the above-mentioned doubts. So in this paper, the principles of civil contract interpretation are as a starting point. In addition, we will in the paper discuss how the contract should be interpreted.