一、侦查机关刑事诉讼行为的概念及要件(一)侦查机关刑事诉讼行为的概念刑事诉讼行为是德国、日本和我国台湾地区等国家和地区刑事诉讼法学的一个基本理论范畴。按照德国学者Sauer的说法,“诉讼行为之概念乃诉讼法之中心点”。虽然此说有夸张之处,但可见诉讼行为理论对刑事诉讼法学之重要性。刑事诉讼行为理论始源于德国,后又传入日本,并在20世纪初经日本传入我国,解放后在我国台湾地区延续,所 I. Concept and Elements of Criminal Proceedings of Investigation Institutions (I) Concept of Criminal Proceedings of Investigation Institutions Criminal procedure acts are a basic theoretical category of criminal procedure jurisprudence in Germany, Japan, Taiwan and other countries and regions in China. According to the German scholar Sauer, “the concept of litigation is the central point of procedural law.” Although this is an exaggeration, we can see the importance of litigation theory to criminal procedure jurisprudence. The theory of criminal procedure originated in Germany and then in Japan, and was introduced into our country through Japan in the early 20th century. After the liberation, it continued in Taiwan of China