公文通过传达事实和指令信息对读者发生作用，以此调节和组织受文机关的公务行为，使之形成有序化的运转，以充分发挥其社会管理效能。在这个动态过程中，作者对文本主题的确立、表达及读者对它的理解与把握至关重要，因此须不断探讨公文主题的形成与表达特征。就公文主题的形 Document through the communication of facts and instructions on the role of readers, in order to regulate and organize the official acts of the receiving organs, so that the formation of orderly operation, in order to give full play to its social management effectiveness. In this dynamic process, the author’s establishment and expression of the subject matter of the text and the reader’s understanding and grasping of it are of crucial importance. Therefore, the formation and expression characteristics of the subject of the official document must be continuously explored. On the subject of the official shape