The utility model discloses an overhead line multistage vibration reduction energy consumption device, which at least comprises a group of vibration reduction units, and each vibration reduction unitcomprises an overhead line clamping part and a vibration reduction energy consumption part which are connected through a transmission rod; the vibration reduction and energy dissipation part comprisesan outer box body, an inner box body and a plate spring set. One end of the transmission rod is connected with the inner box body; the interiors of the inner box body, the plate spring set and the outer box body are fixed in pairs through a plurality of springs; the interior of the inner box body is divided into an upper cavity and a lower cavity through a partition plate, the upper cavity and the lower cavity are each provided with a magnet, and a downward or upward magnetic field is formed in the inner box body. The upper cavity is filled with magnetorheological fluid, and a plurality of hollow metal balls with insulating protective layers are arranged in the magnetorheological fluid; and a spring pendulum is arranged in the lower cavity. According to the utility model, multi-stage vibration reduction can be realized, the vibration problem of the overhead line is effectively solved, and the overhead line vibration reduction device has the advantages of reasonable design, light weight, simple principle, low cost, simple installation and the like, and has good economic benefits and application prospects.