Railway dotting machine capable of walking autonomously

The invention discloses a railway dotting machine capable of walking autonomously, and relates to the technical field of railway dotting machines, the railway dotting machine comprises a dotting machine body, one side of the dotting machine body is fixedly connected with a fixed arm, and the inner wall of the fixed arm is slidably connected with two movable arms. Through the arrangement of the detection mechanism, when a rotating rod moves to concave and convex positions of a railway track, the rotating rod is driven to move, the rotating rod moves to drive a mounting block and a first piston rod to move, and the first piston rod moves to extrude a second piston rod to move through inert gas; a second piston rod moves to drive an L-shaped rod and a cylindrical block to move, the cylindrical block moves to extrude a swinging pointer to swing around a rotating column, and the tip part of the swinging pointer is red, so that swinging of the swinging pointer is more easily observed; a worker can instantly detect