The invention provides a vacuum thermal baffle plate comprising an upper thermal baffle and a lower thermal baffle, wherein the peripheries of the upper thermal baffle and the lower thermal baffle are welded together by welding fluxes, a closed vacuum layer is formed between the upper thermal baffle and the lower thermal baffle, the upper thermal baffle and the lower thermal baffle are both convex, and the convex sides of the convex thermal plates face to the outer side. According to a manufacturing method of the vacuum thermal baffle provided by the invention, the process is simple, the manufactured vacuum thermal baffle overcomes the defects of the existing thermal baffle, the air tightness of the vacuum layer of the vacuum thermal baffle can be effectively ensured, the service life of the vacuum thermal baffle is prolonged, the strength, the thermal insulation, the sound insulation and the fire resistance of the vacuum thermal baffle are enhanced, and meanwhile, the vacuum thermal baffle has an excellent decorative effect.