The invention provides an anti-climbing stair for a high-
voltage electric wire tower and relates to a stair. A board shaped like a Chinese character 'Tu' (9) is connected with the face at the lower part of a connection
flange (3) at the lowermost part of the high-
voltage electric wire tower; the lower part of the convex position of the board shaped like the Chinese character 'Tu' is fixedly connected with the upper end of a channel
steel jacket (5); the lower end of the channel jacket is fixedly connected with a
forward bending part at the lower end of a back supporting board (10); the both sides of the face at the front part of the back supporting board are movably connected with the inner ends of a plurality of steel roll
stairs (6) through a plurality of pin shafts (14); the steel roll
stairs are located at a horizontal position, and limiting convex blocks (12) are respectively arranged at each upper part of the steel roll
stairs, which is tightly adhered to an upward bending rod (13); splicing rods (11) are respectively arranged at the back part of a connecting rod (7) corresponding to the upper part of the other end of each upward bending rod. The foldable stair arranged at the lower part of the high-
voltage electric wire tower disclosed by the invention can be used for effectively preventing children or suicides from climbing the high-voltage electric wire tower.