常用的上供下回式和水平串联式供暖系统虽然各有特点，但在设计时一定要根据建筑物的用途、特点选用，才能达到理想的运行效果。笔者针对一幢学生宿舍楼上供下回式供暖系统运行中存在的问题，将原系统形式改为水平串联式系统。工程改造简单，工期短，改造后系统运行管理方便、节能。 Commonly used on the next-back and horizontal series heating systems have their own characteristics, but must be selected according to the use of buildings, features, in order to achieve the desired results. In response to the problems existing in the operation of the next-door heating system in a student dormitory, the author changed the original system to a horizontal tandem system. The engineering transformation is simple, the construction period is short, and the operation and management of the system after the transformation is convenient and energy-saving.