The utility model relates to a highway anti -collision facility technical field discloses a concrete barrier unit and concrete barrier for improve concrete barrier's guidance quality, buffer intensity, reduce the emergence that the vehicle bumped against rebound phenomenon behind the concrete barrier. Concrete barrier unit wherein includes: a simultaneously be two wave -shaped curved surface for inciting somebody to action the fixed guardrail basis in concrete barrier unit and ground, being located the guardrail wall body on the guardrail basis and being located the guide beam that the guardrail wall body deviates from guardrail basis one end, the guide beam is towards the vehicle. in addition the utility model provides a concrete barrier unit through with guardrail wall body concave surface in the one side of vehicle sets up to the arc, can improve the buffering and direction function of guardrail, produces rebound phenomenon behind the reduction vehicle collision guardrail, fortifying fibre through add equitable ratio in concrete barrier can improve guardrail intensity and anti crack ability, lightens concrete barrier selweight weight.