The invention discloses a protection device for roadway construction. The protection device comprises a support upright column, lateral support rods and protection wings, wherein the lateral support rods are arranged on the support upright column; umbrella wings are arranged on two sides of the upper end of the support upright column; the lateral support rods are used for supporting the umbrella wings. When the protection device is used, the umbrella wings are supported by the lateral support rods, and thus an umbrella shape can be formed. The protection device is reasonable in design, simple in structure, safe and reliable, simple and convenient to maintain, light in self weight, convenient to mount and durable. By adopting the protection device, a vertical support force can be provided for exposed rock, the rock can be prevented from falling off to hurt operators, and a safe working environment can be created for the operators. The protection device is wide in material source, can be designed and processed according to the size of a working surface, and thus has wide popularization prospects.