The invention discloses a continuous filament reinforced polyolefin composite guard bar which comprises a guard bar board and uprights. An anti-blocking block is arranged between the guard bar board and each upright. Each upright and the corresponding anti-blocking block are connected with the guard bar board through a connecting piece. The continuous filament reinforced polyolefin composite guard bar is characterized in that the guard bar board is made of a continuous filament reinforced polyolefin composite; the continuous filament reinforced polyolefin composite is composed of, by weight percentage, 27% to 65% of polyolefin resin, 30% to 70% of continuous filaments and 3% to 5% of an additive, wherein the polyolefin resin, the continuous filaments and the additive are completely immersed and then pressed into sheets; the ten or more layers of sheets with the continuous filaments in different directions are pressed and formed to obtain the guard bar board; and the continuous filaments in the guard bar board are scattered and the continuous filaments are coated with the polyolefin resin. The continuous filament reinforced polyolefin composite guard bar has the beneficial effects of being high in strength, resistant to corrosion, low in weight and the like and can completely replace a steel guard bar; and the road guard bar is simple in structure and convenient to install, the problem that a guard bar board in an existing road guard bar is likely to rust is solved, the strength of the guard bar board of the guard bar is higher than that of an existing wavy guard bar, and the maintenance cost is reduced.