The paper introduces the process of exhausting and ageing of 126 kV vacuum interrupter, and describes the exhausting and ageing methods of the vacuum interrupter and the application of absorbing agent and titanium pump. 介绍了126kV真空灭弧室的排气和老炼的研究过程,并阐述了烘烤排气和老炼去气的方法以及吸气剂与钛泵的应用。