Embedded multifunctional sleeve

The utility model discloses a pre-embedded multifunctional sleeve which comprises a sleeve body, a bolt and a buckle cap, wherein the sleeve body is installed in a pre-embedded mode, an inner cavity of the sleeve body faces outwards, the bolt is in threaded connection with the inner cavity of the sleeve body, and the buckle cap is detachably connected to the end of the bolt. A stop ring is arranged at the open end of the inner cavity on the outer wall of the barrel, a plurality of coaxially distributed anti-falling rings are arranged on the outer wall of the barrel from the stop ring to the other end, the projection shape of the anti-falling rings is an isosceles trapezoid, and the anti-falling rings are arranged on the outer wall of the barrel in the posture that the bottom edges face outwards; a screw head of the bolt is a flat hexagon, a cutter groove is formed in the middle of the screw head of the bolt, an inner cavity of the buckle cap is round, the diameter of the inner cavity of the buckle cap is equa