近期国内刑诉学界在研讨审前程序的完善问题时,特别是在探讨侦查程序的基本原则时,纷纷提出了任意侦查原则与强制侦查法定原则。这种将侦查机关的行为区分为任意侦查与强制侦查,并令其遵循不同的原则的理论源于日本。在探讨我国是否应当引入这一理论之前,对日本学界与司法实践中的有关该问题的争论予以仔 Recently, when the domestic criminal law scholars studied the perfection of the pretrial procedure, especially when discussing the basic principles of the investigation procedure, they all proposed the arbitrary detection principle and the mandatory principle of investigation. This kind of theory that divides the acts of investigative organs into arbitrary investigation and compulsory investigation and makes them follow different principles stems from Japan. Before discussing whether or not our country should introduce this theory, we should give an argument about this issue in Japanese academic circles and judicial practice