一般處分為我國行政程序法所明文承認之概念，且甚少受到質疑。其概念除了存在於行政法總論外，亦對於行政法各論領域造成影響。有關都市計畫之定性即為適例。一般多認為大法官釋字第一五六號不但引進了此一概念，且以之詮釋部分都市計畫之性質。然而此一概念之創設，在其源起之德國並非沒有爭議。有鑑於此，本文即分別從解釋論及立法論之角度，對於一般處分之概念進行要件要素之理解以及實益之檢討。經論證檢驗後，本文主張：一般處分之概念並沒有創設之必要，其指涉內涵仍不脫法規命令之範圍，有關都市計畫包括其通盤檢討與個案變更在內，均應以法規命令理解，始為妥適。至於其行政救濟，應該發展規範審查訴訟或公法概括審判權加以解決。

General administrative act (Allgemeniverfuegung) is a concept adopted by Administrative Procedure Act in Taiwan, and it is seldom questioned. This concept has great influences in the quality of urban planning. In the Judicial Yuan Interpretation No. 156, it is understood that some types of urban planning are general administrative acts. However, there are still many arguments about the creation of this concept in the state of its origin - The German. Accordingly, this Article is going to study and review this concept from explanation and lawmaking ground. After study and review, this Article argues: The concept of general administrative act is not necessary; it makes no differences from order or regulation. The urban planning, including total review change or individual change, is always regulation, but not general administrative act. As for the right protection, we shall develop a special action system for the judicial review of the Urban Planning.