Tool for milling concrete guardrail

The utility model provides a tool for milling a concrete guardrail, belongs to the technical field of road and bridge engineering, and aims to solve the problems that the body of a worker is easily injured and the personal safety is influenced when the worker is in contact with a milling cutter carelessly in the prior art. Comprising a tool body, an operation supporting arm, an operation handle, a movable sliding block, a milling rotating shaft, a milling rotating cutter, a milling protection mechanism and a height adjusting mechanism. The operation supporting arm is fixedly connected to the upper end face of the tool body. The operation handle is fixedly connected to the operation supporting arm; the movable sliding block is connected into the tool body in a sliding mode. The milling rotating shaft is rotationally connected to the interior of the movable sliding block; the milling rotary cutter is fixedly connected to the milling rotary shaft; the milling protection mechanism is arranged on the outer end sur