Marking-off pin for milling machine

The utility model discloses a marking-off pin for a milling machine. The marking-off pin comprises a rod body and a pin head fixedly arranged on one side of the bottom of the rod body. The included angle between the pin head and the rod body ranges from 100 degrees to 120 degrees. The pin head is arranged on one side of the rod body, line marking on the side face can be conveniently achieved through the action of the milling machine, operation is easy and convenient, equipment changing is not needed, and implementation cost is low. Meanwhile, in order to facilitate marking of the line close to the ground, the end of the pin head is lower than the lower end face of the rod body, and the distance from the end of the pin head to the position below the lower end face of the rod body can be set at will according to different machining situations.