在邮政系统与邮政生产系统宏观结构体制分别确定为“独立系列制”与“直线——中心局制”的前提下 ,研究了邮政生产系统的宏观管理幅度与层次 ,即以中心局为管理对象的管理系统的管理幅度与层次。而且将邮政生产系统的管理组织结构确定为“三级结构 ,两级管理”,并明确了两级管理机构的设置 ,为进一步确定两级管理机构的职能打下了基础 Under the premise of defining the macro structure system of postal system and postal production system separately as “independent series system” and “line-central bureau system”, the macro-management scope and level of postal production system are studied, that is, Management system management level and level. Moreover, the management organization structure of the postal production system was defined as “three-level structure and two-level management”, and the establishment of two-level management organization was clarified, laying the foundation for further determining the functions of the two-level management organization