The invention relates to a manufacturing method of heat exchanger equipment, and discloses a manufacturing method of an aluminum plate-fin heat exchanger. The method comprises the steps of selecting full aluminum alloy material, preparing the parts of a heat exchanger, cleaning elements, assembling a heat exchanging core, vacuum brazing, assembling the complete heat exchanger, and the like. The manufacturing method has the advantages of compact and simple structure, good sealing performance, high temperature and high pressure resistance, low cost, small volume, light weight, low energy consumption, no easy deformation of the middle part of a heat radiating core and centralized stress of welding seam position between a sealing tape and a partition board. The rupture phenomena of the welding seam and the division plate are reduced, and the leakage rate of the heat exchanger in the use process is reduced.