The invention belongs to the technical field of highway safety road piles, and particularly relates to a road post with a hook. The road post comprises a swing shaft, a gas bag, a first flat post plate, a servo motor, a pneumatic switch, the hook, an extensible boosting mechanism and the like. The gas bag is mounted between a first vertical post plate and a fourth vertical post plate. When a vehicle impacts on a safety column, the first vertical post plate deforms due to impact, the gas bag is squeezed, a high-pressure gas in the gas bag enters an annular cylinder via a gas inlet hole of the annular cylinder, the swing shaft starts rotating, and the hook mounted on the swing shaft penetrates the first flat post plate to hook a front engine hood of the vehicle; one end of the extensible boosting mechanism is connected with the safety column, and the extensible boosting mechanism can play a role in buffering and can provide the high-pressure gas. The road post has the advantages that thestructure is simple; when the vehicle impacts on the road post, effective buffering effect can be achieved through interworking between the safety column and the extensible boosting mechanism, and accordingly, vehicle damage degree can be reduced; the road post has high practicability.