本文分析、论证了施工组织设计理论体系构成的三大内容及其本质;三大内容以施工总进度计划中的施工序列体系为其联系核心;而施工序列体系的核心,即重点工程施工序列。施工组织设计从施工序列设计开始,有其必然的联系、往复和程序。 This paper analyzes and demonstrates the three major contents and the essence of the theoretical system of construction organization design. The three major contents are linked by the construction sequence system in the construction schedule. The core of the construction sequence system is the key project construction sequence. The construction organization design begins with the construction sequence design and has its inevitable connection, reciprocity and procedures.