Theftproof lock core reaches rather than complex key

The utility model discloses a theftproof lock core, including the core, the front side of core is equipped with the casing, the middle part of core is equipped with axial second lockhole, the middle part of casing is equipped with the first lockhole that communicates with the second lockhole, all be equipped with the storage tank in the first lockhole on the relative lateral wall, bottom in the storage tank all is equipped with the spring, one side that the storage tank was kept away from to the spring is fixed with the baffle, and two baffles counterbalances, one side that the baffle is relative all is equipped with semi -circular opening, the bottom of semi -circular opening all is equipped with the constant head tank, the utility model also discloses an one kind and above -mentioned theftproof lock core complex key, including the key body, the front end of key body is equipped with the locating piece, the one end that the locating piece is close to the key body is equipped with T type fixture block. The ut