The invention discloses an entanglement extractor, an entanglement extracting device comprising the entanglement extractor and an entanglement extracting method. The entanglement extractor comprises a rotary drum (1) and a plurality of extracting bars (2) capable of rotating with the rotary drum (1) synchronously. A plurality of through holes corresponding to the extracting bars (2) are formed in the side wall of the rotary drum (1). The extracting bars (2) can penetrate out of the corresponding through holes or retract into the through holes in the rotating process. When the extracting bars penetrate out of the through holes, entanglements can be extracted, and when the extracting bars retract into the through holes, the entanglements can be disengaged. Thus, the entanglements can be conveniently collected and separation efficiency is improved.