The present invention discloses a phase to phase spacer of restraining double loop power transmission line sleet jump and a configuration method thereof. The phase to phase spacer is composed of a vibration absorption device, a first connecting device and a second connecting device, the vibration absorption device is connected with two power transmission lines separately via the first and second connecting devices, and the first connecting device is composed of a hanging plate, an insulator and a hydraulic damper of which the length can be adjusted. One end of the insulator is connected with the vibration absorption device via the hydraulic damper, and the other end is connected with the power transmission line via the hanging plate. The configuration method comprises the steps of setting the length and adjustment range of the phase to phase spacer, selecting the number and type of absorption oscillators, setting the installation position and number of the phase to phase spacer, etc. The phase to phase spacer can adjust the length adaptively, and enables the shape change of a conducting wire and the load at the connection position of the spacer and the conducting wire to be reduced and the line service life to be improved. By a hollow structure, and under the premise of not increasing the weight, the slenderness ratio of the spacer is reduced as much as possible, and the anti-compression stability of the spacer is improved.