Drilling deviation prevention device for drilling operation

The utility model discloses a drilling anti-deviation device for drilling operation, and particularly relates to the field of drilling operation, which comprises a plate body and is provided with a round hole, a screw rod, a square block and a spring, so that a worker can conveniently use the outer wall of the screw rod to be movably connected with the inner wall of the round hole formed in one side of a support plate; a spring movably connected with one end of the outer wall of a screw rod is shrunk, one side of a fixing plate is used for being tightly connected with the outer wall of the plate body, the screw rod is loosened, the screw rod drives a square block to move forwards under the reset shrinkage force of the spring, and a connecting plate, a concave hole, a lead screw, a buffer pad, a limiting block and a limiting groove are installed; a worker can conveniently use a limiting block movably connected with the top end of a buffer pad to be in clamped connection with the inner wall of a limiting groove