The principle technical parameters and generalarrangement of air-conditioned, semi-cushioned berthsleeping car type YW_(25A) are introduced. And the mainstructural characteristics of every part, existing prob-lems and improvement aim are pointed out.

• 介绍了YW_(25A)型空调硬卧客车的主要技术参数、总体布置、各部位的主要结构特点及存在的问题和改进方向。