Plastic-wood composite board with smooth surface

The utility model belongs to the technical field of plastic-wood composite boards, and particularly relates to a plastic-wood composite board with a smooth surface, which comprises a composite board body, the composite board body comprises a panel layer, an insect-proof layer, a waterproof layer, an armor layer, a flame-retardant layer and a base board layer, the insect-proof layer is arranged on one side of the panel layer, an insect repellent coating is arranged on the surface of the insect-proof layer, and the waterproof layer is arranged on the surface of the base board layer. A waterproof layer is arranged on one side of the insect-proof layer, hydrophobic breathable film layers are arranged on the two faces of the waterproof layer, an armor layer is arranged on one side of the waterproof layer, a flame-retardant layer is arranged on one side of the armor layer, and a base plate layer is arranged on one side of the flame-retardant layer. The insect repelling plate is arranged at the bottom of the composi