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This invention discloses a method and system for preventing oxidation of recycled copper rods, relating to the field of non-ferrous metal surface protection. The method includes material preparation, pretreatment, preparation of an anti-oxidation solution, dip coating, drying and curing, and packaging. This invention offers excellent anti-oxidation performance: the anti-oxidation film is dense and uniform, effectively isolating oxygen and moisture from contact with the copper surface. Recycled copper rods stored in a natural environment show no significant oxidation after more than 6 months, with an anti-oxidation efficiency ≥98%, far superior to traditional methods. The film exhibits strong adhesion: the silane coupling agent forms a chemical bond with the copper surface, and combined with the curing treatment, the film adhesion is ≥5N / cm, making it difficult to peel off and able to withstand minor friction during storage and transportation.