In order to improve the ability of distortion-free reconstruction of the disturbance signal of the Φ-OTDR system， a Φ-OTDR structure was proposed to combine frequency division multiplexing （FDM） and polarization diversity reception （PDR）. It was expected that the use of this fusion technology could effectively achieve simultaneous suppression of interference fading and polarization fading. Through a confirmatory experiment， the average distortion rate of the reconstructed signal of the 10 s data was reduced from 15.55% to 1.10%. Compared with using FDM technology alone to suppress interference fading and using PDR technology alone to suppress polarization fading， it had better fading noise suppression effect， which could provide an effective anti-fading noise method for the engineering promotion of the Φ-OTDR system.