The utility model relates to a monitoring devices is hung in catenary system contact, including being used for monitoring the collector of contact wire vibration data and the manifold that is used formonitoring carrier cable status data, the collector through mounting screw on contact line dropper wire clamp, the manifold passes through the clamp and installs in the carrier cable, collector and manifold carry out data transmission through connection cable or radio communication's mode. Simple structure is easy -to -use for this product, and technological effect is showing, but the occasion of(carrier cable and contact wire) on -line monitoring product design is hung in the contact to the wide application, satisfies the open -air environmental work requirement of catenary system, has realized that the contact hangs that (contact wire and carrier cable) is waved, the real -time supervision of vibration, electric current, temperature, can provide reliable, accurate, comprehensive monitoring data.