唐、五代时期，进奏官始终代表藩镇利益，不仅发行进奏院状，还负责地方与中央之间的信息传播工作，深度参与政治并有诸多非法行为。宋代不仅收缩进奏官的职务范围，强化官文书的保密性以防进奏官泄密，还不断细化对进奏官违规传播行为的惩罚措施，降低进奏官的待遇水平。从唐经五代到宋，进奏官由主动的传播者和强势的参政者转变为被严格控制、地位低微的“传声筒”，这是中央集权加强的趋势下控制政治信息传播的重要手段。

The position and function changed a lot on Jinzouguan from Tang to Song Dynasty, which were obviously reflected in the reducing function and the strengthening control.During the period of Tang and Five Dynasties,Jinzouguan issued the official report and was responsible for the communication between the central and local on behalf of local,companied with deeply political participation and seriously criminal behavior. In Song Dynasty,the range of Jinzouguan’s function was shrunk,and the secrety of official documents was reinforced when the detailed punishment was severe and the payment was reduced. From Tang to Song Dynasty, Jinzouguan was changed from powerful politicians to information deliverer,thus the control of political information communication was realized under the reinforcing trend of authority centralization.