The invention relates to the technical field of packaging materials, in particular to a manufacturing technology for a spray-film oriented strand board. The manufacturing technology comprises the steps that deionized water is sprayed to the surface of an oriented strand board body, and the oriented strand board body is frozen for 4-15 hours; the oriented strand board body is heated to 140-185 DEG C and is soaked with an antibacterial solution; the oriented strand board is irradiated with ultraviolet rays and then is sent into a dryer to be dried; an adhesive is sprayed to the surface of the oriented strand board, and atomized salicylic acid is sprayed to the surface of the adhesive; an anti-corrosion layer is sprayed to the surface of the oriented strand board; pure alcohol is sprayed to the surface of the oriented strand board after the heat preservation; and the oriented strand board is dried in a dryer. According to the manufacturing technology, the antibacterial solution is used for soaking the oriented strand board so that the oriented strand board can be not prone to get corroded by mould, irregular cross-linking can be formed between the adhesive and the anti-corrosion layer by the salicylic acid, and therefore the adhesive force of the adhesive to the anti-corrosion layer can be greatly enhanced, and the anti-corrosion layer forms a spray film on the surface of the oriented strand board so that the oriented strand board cannot crack and bulge under outdoor rain wash, strong light illumination and irradiation of the strong ultraviolet rays.