The utility model discloses an increase sleeve for polished rod eye belongs to polished rod eye part field. The sleeve includes: at least one backing plate and two are used for the suit to be in the outer annular anchor clamps of wire rope, every backing plate detachably cover is respectively established outside the wire rope, every the backing plate all presss from both sides to be established between the two rings clamp utensil, every the annular anchor clamps all include two semicircle clamps, every the annular anchor clamps two semicircle clamp detachably installations together. The utility model discloses avoided between polished rod eye and the rubber valve sinking to producing the collision because of the beam -pumping unit basis.