Intelligent safety fence, including the rail, the bottom of rail installation base, rail are in vertical state, and rail place plane is perpendicular with base place plane, the mid -mounting automatically -controlled door of rail, one side of automatically -controlled door is articulated with the rail, the upper portion installation motor of rail, the telescopic link is installed to the output shaft of motor, and the one end and the motor of telescopic link are connected, and the telescopic link is perpendicular with the output shaft of motor, and the other end of telescopic link is connected with the middle part of automatically -controlled door, the utility model discloses an automatically -controlled door is located the rail main part, and automatic door opener mainly includes induction system, drive arrangement, net door and power four bibliographic categories branch, and the net door adopts the lattice -shaped design, and when soon reacing security fence in the robot, induction system listens the automatic net door of opening of being close to of robot, and the robot passes through smoothly, then self -closing net door.