Bolt connection pair with throttling elements

The invention discloses a bolt connection pair with throttling elements. The bolt connection pair comprises an oil-passing bolt and an oil-passing connector which is connected with the oil-passing bolt in a matched mode through threads. The screw of the oil-passing bolt is provided with an oil-passing channel in the axial direction, and the side wall of the screw is provided with labyrinth throttling holes communicated with the oil-passing channel. Thus, the flow velocity of oil passing through the oil-passing bolt connection pair can be controlled, and accordingly the problems of cavitation, flashing, vibration and noise in an existing oil-passing bolt can be solved.