Highway guardrails must prevent out-of-control vehicles from rushing out of the road and colliding with obstacles or other facilities outside the road, or rushing through the central partition and entering the opposite lane to cause greater traffic accidents, and at the same time, it must also enable vehicles to return to normal driving. The direction, the least damage to the driver and passengers, and can play a role in inducing the line of sight. Highway guardrail guardrails are generally divided into flexible guardrails, semi-rigid guardrails and rigid guardrails. Flexible guardrails generally refer to cable guardrails, rigid guardrails generally refer to cement concrete guardrails, and semi-rigid guardrails generally refer to beam guardrails. Beam-type guardrail is a beam-type structure fixed by pillars. It relies on the bending deformation and tensile force of the guardrail to resist the collision of vehicles. The beam-type guardrail has certain rigidity and toughness. The deformation of the beam absorbs the collision energy, and its components are easy to damage. Replacement has a certain line of sight guidance effect, can be coordinated with the road line, and has a beautiful appearance. Among them, the corrugated beam guardrail is the most widely used at home and abroad recently.