The invention provides a blocking rod. The blocking rod comprises a rod body and a supporting leg mechanism connected to the bottom end of the rod body, wherein the supporting leg mechanism comprises multiple supporting legs, and the supporting legs are provided with first retractable positions and second extensible positions. The supporting rods of the blocking rod can be switched between the first positions and the second positions, and when the supporting rods are located at the first positions, storage devices of the supporting legs enable the supporting legs to be attached to the rod body, the space occupied by the blocking rod is effectively decreased, and transportation and carrying of the blocking rod can be facilitated. When the supporting legs are located at the second positions, supports are stretched to form a base of the rod body so as to enable the blocking rod to be stably erected on the ground and matched with a caution band in work.