A device (10) for extracting and inserting bushes (20) is described, comprising a short pipe (11) with two longitudinal slits (16), a tie-rod (12) capable of being inserted in the short pipe (11), a traction bracket (15) capable of being connected to the tie-rod (12) for exert a traction onto the bush (20) to be extracted with two projections (18) capable of being inserted in the slits (16) when the traction bracket (15) is inserted in the short pipe (11), a tie-rod stopping element (24), a short pipe stopping element (25), and bracket stopping elements (26) when inserting the bush (20); such device (10) is used for extracting and for inserting the bush (20) in a seat (35) using a traction device (28) blocked against the short pipe (11) by the tie-rod stopping element (24) connected to the tie-rod (12).