The invention discloses a fence with a wiring slot. The fence comprises vertical columns and grids, wherein the vertical column is hollow and comprises a front side wall, a rear side wall, a left side wall and a right side wall; the middle part of the front side wall is bent into a trapezoidal groove; two rows of bayonets are arranged on the rear side wall; the grids are arranged on the rear side walls of the two vertical columns; a mesh pressing piece presses the grids; limiting claws are inserted into the bayonets; the mesh pressing piece is connected with the vertical column through bolts; a mounting plate is arranged below the vertical column; a baffle is arranged in the vertical column; an arc claw obliquely downward is arranged at the rear side of the baffle and is clamped in the bayonet; a transition plate vertically downward is arranged at the front side of the baffle and is connected with the trapezoidal groove; a thread hole is formed in the middle of the baffle; the wiring slot is formed above the baffle; a slot cover is arranged above the wiring slot. Through the fence with the wiring slot, the wiring slot is in split type and is arranged above the fence; the wiring slot can be easily opened for checking lines; the maintenance and replace are convenient; the working efficiency is improved.