行政时效是指一定的事实状态经过法定期限而产生某种特定行政法律后果的程序法律制度，法律事实、期限和法律后果是它的三个基本要素。现代行政时效的基本价值取向应当是在公平的基础上追求行政主体与行政相对人双方的效率，行政时效制度的设定应当贯穿新的行政时效观。深入研究和科学制定我国的行政时效制度具有重要的时代意义。　 Administrative limitation refers to the procedural legal system, legal fact, deadline and legal consequences of a certain administrative law that have certain legal status after the statutory time limit is its three basic elements. The basic value orientation of the modern administrative prescription should be pursuing the efficiency of both the administrative subject and the administrative counterpart on the basis of fairness. The setting of the administrative prescription should run through the new concept of administrative timeliness. To study and formulate the system of administrative limitation in our country scientifically has important contemporary significance.