The utility model discloses a butterfly nut special spanner, including the sleeve, this telescopic internal diameter is greater than butterfly nut's external diameter, and this telescopic bottom is equipped with two draw -in grooves of relative setting, puts butterfly nut's butterfly ears through this two draw -in grooves card, still include two twist grips, telescopic radial rigid coupling in sleeve outer wall is followed respectively to this two twist grip, and the coaxial setting of this two twist grip. The utility model discloses only need during the operation will overlap the barrel casing outside butterfly nut to the butterfly ears that make butterfly nut block respectively in two draw -in groove departments, the even rotatory rotate handle sleeve of rethread can, very convenient, butterfly nut's butterfly ears deformation and damage can also be avoided to single can the operation, and not only can effectively screw up butterfly nut. Furthermore, telescopic radial rigid coupling in sleeve is followed respectively to two twist grips, can avoid the twist grip to lose on the one hand, when on the other hand can make the user pass through rotatory rotate handle sleeve, avoids the twist grip positioning and influences the operation.