The utility model relates to a monitoring system for horizontal rotation flexible moving contact net. Horizontal rotation flexible moving contact network state switches needs on -the -spot affirmation, and the workman examines at the scene car contact net inefficiency, bothersome hard. The utility model discloses a stationary contact net is rather than the mobile catenary in interval, the settingof mobile catenary one end is casted anchor and is weighed down the translation of stone roller compensation arrangement tractive mobile catenary side direction, sets up in the middle of the mobile catenary and installs in supplementary its the side direction translation of the driven cantilever of single suspension mast, setting up on the door shaped frame crossbeam of stationary contact net andmobile catenary linking department and taking the photograph camera, take the photograph camera and pass through wireless network and be connected with network video server NVS, network video server NVS passes through LAN access monitoring host. The utility model discloses can show mobile catenary and electrical connector's state video in real time, make operating personnel just can know the operating condition of these equipment in real time at the control chamber, the improvement workman confirms contact net operating condition's work efficiency.