The invention discloses a
fiber-reinforced cladding composite board and a preparation method thereof, and relates to the technical field of composite boards, the
fiber-reinforced cladding composite board comprises two
layers of substrates and a
fiber composite layer, the fiber composite layer is located between the two
layers of substrates, the fiber composite layer comprises 30-50% by weight of glass fibers and 50-70% by weight of an
adhesive, and the fiber-reinforced cladding composite board is prepared from the following components in percentage by weight: 30-50% of glass fibers and 50-70% of the
adhesive. The fiber composite layer further comprises a
solid air
insect repellant, the
solid air
insect repellant comprises, by weight, 20%-30% of an adsorption material, 20%-30% of a filling agent, 20%-30% of a
plasticizer, 3%-5% of a
plant extract and the balance
essential oil, and the adsorption material accounts for 20%-30%, the filling agent accounts for 20%-30%, the
plasticizer accounts for 20%-30% and the
plant extract accounts for 3%-5%. The weight ratio of the
essential oil is 30%-35%. The light weight of the composite board can be greatly improved through the fiber composite layer, and the
solid air
insect repellant can effectively help the composite board to repel mosquitoes, so that when the composite board is used as a building board, indoor mosquitoes can be reduced, and the indoor environment can be improved.