The paper describes the inspection device for wear of solid laser and sodium lamp type contact wire that can be installed on the trains in operation. It also introduces the research, development and application of the new type contact wire and MF contact wire. 叙述可以安装在运营列车上的固体激光式、钠灯式接触导线磨耗测定装置,以及新型接触导线、MF接触导线的研制与应用。