The invention discloses a transmission line conductor wind vibration suppression control system, which comprises a mechanical bearing system for mounting the transmission line conductor wind vibrationsuppression control system on a transmission line tower; A hydraulic trapping system for converting the vibration kinetic energy of the conductor on the transmission line tower into hydraulic energyand then outputting the hydraulic kinetic energy in rotation while reducing the vibration amplitude of the conductor; conversion and energy storage system for converting rotational kinetic energy output by the hydraulic energy capture system into electrical energy storage; An on-line monitoring system is used for monitoring the vibration amplitude of the conductor, and sending an alarm message when the vibration amplitude of the conductor is too large. The invention is relatively simple in structure, safe and reliable, and can not only suppress the wind vibration of the conductor, but also provide electric energy for the on-line monitoring system by utilizing the intercepted vibration energy, so that the operation and maintenance personnel can always know the field situation.