The invention discloses a high-strength outdoor curtain wall panel machining process. The machining process comprises the following steps: the step S1 of weighing raw materials; the step S2 of grinding the raw materials using an ultrafine grinder, fully mixing the raw materials and continuously heating the mixture to a molten state, extruding the molten mixture through an extruding machine to forma slab; the step S3 of preparing an adhesive; the step S4 of making a phenolsulfonic acid resin film; the step S5 of applying an adhesive on one side of the slab, covering the surface of the adhesivewith the phenolsulfonic acid resin film, and then compacting the slab and the phenolsulfonic acid resin film at high temperature to obtain a high-strength outdoor curtain wall panel. The outdoor curtain wall panel has high strength and good tensile performance due to use of epoxy resin, phenolic amino resin, glass fiber and carbon fiber. Further, by means of kaolin, silicone, talcum powder, barite powder and calcium carbonate, the production cost of the outdoor curtain wall panel can be reduced, and the economic benefit is increased.