隨著資訊通訊技術日漸進步與普及，政府亦開始發展各種線上溝通工具，作為與民眾互動的方式之一，在諸多的電腦中介傳播形式中，線上論壇即為一種值得重視的應用型態。本研究由理性公共論述的角度出發，主要為調查中央政府機關網路論壇的版面運作與討論情形，以及兩者之間的關連。首先檢閱相關文獻以找出本研究定位，再從相關理論中，整理出理性公共論述的內涵和要件，建構出理想網路論壇版面和公共論述的模式，共有五面向，三十五個項目。實證資料蒐集分為兩階段，第一階段採線上檢閱法，檢視所有的中央政府網路論壇版面；第二階段採內容分析法，檢視由第一階段篩選出的部分網路論壇之主題言論，最後彙整兩者的資料結果，並衍生出三個命題，以瞭解兩者之間的關連。 / 研究結果發現，我國目前共有42個中央政府行政機關於網站上設有網路論壇，提供民眾自由發表言論和詢問問題。以網路論壇的版面設計而言，這些論壇都沒有太大的差異。而在政府主動回應上則稍顯不足，目前政府對於論壇言論多是採取選擇性回應或不回應居多。在公眾參與情形方面，整體而言參與討論的熱絡情況差異很大，依據論壇所屬機關涉及的業務和公共議題而有所差別。以主題討論內容來說，雖然討論的質與量，目前仍未形成一真正理想的公共論述空間，但是在幾個專門討論特定公共議題的論壇中，可以看到參與者提出各種不同觀點，以及彼此之間互相溝通辯論的情形。證明網路論壇若作為特定公眾議題的討論園地，它可以是一個辯論空間、傳達意見的場域，讓一個議題很快擴散開來，並使論壇參與者可以從不同的角度去討論它，這就是網路論壇最重要的價值。 / 本研究結果說明了現階段中央政府網路論壇其實仍有值得改進的空間，網路論壇作為政府與民眾的溝通管道，其在公民參與上的效用是不容忽視的，隨著網路通訊科技日漸普及，越來越多人選擇用網路作為陳述意見的管道，故政府實應妥善運用現有的網路論壇機制，作為線上互動的公眾領域，最後，本研究也整理了若干實務建議，提供給政府作為網路論壇經營管理上的參考。 / As the Information and Communication Technologies (ICTs) have been progressed and widespread, government agencies begin to develop various kinds of online communicational tools for interacting with people. In many kinds of computer-mediated communications (CMC), the most noteworthy is a network or Internet forum. This study, based on rational theory of public discourse, attempts to investigate the constitution and the discussion on the network forums in Taiwan’s central government, and to explore the relation between the two. After the literature review positioning the study, the author extracted the components of rational theories of public discourse and constructed the indicators for evaluating Internet forums, including 5 dimensions and 35 items. The first stage of data collection is an online review inspecting the Internet forums of the central government agencies. The second stage is analyzing the content of the themes posted on the forums chosen from the first stage. Finally, three propositions were derived to realize the relation between the design and content of the forums as indicated above. / 42 forums of administrative agencies were located to offer the citizens to publish opinions and inquire questions. The reviewed forums show little difference in their design and mechanism. Concerning their management, the agencies reply on a selection basis or even seldom reply. Nevertheless, substantial difference is found on the degree of participation of the forum. Although the quality and quantity on these network forums does not suffice to develop an ideal public argumentation, several forums dedicated to specific public issues have shown plural views from the participants. In sum, the Internet forums of public agencies can carry and diffuse the citizen’s opinion and debate from dierse perspectives. / Accordingly, the results suggest that the Internet forums of government deserve further improvement. As a communicative channel between government and citizens, the benefit of citizen participation is significant. Government should utilize their mechanism properly as the online consultation platform. Finally, this reaerch provides suggestion on management and administration of the public Internet forums.