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Scandium oxide is an important rare earth oxide that, due to its unique physical and chemical properties, is widely used in multiple high-tech fields. In solid oxide fuel cells, it can serve as an electrolyte or electrode material, enhancing battery efficiency and lifespan. In high-performance ceramic materials, it is used to prepare heat-resistant, high-strength structural ceramics for aerospace engine components. In optical and laser materials, it acts as a modifying additive for laser crystals, optical fibers, and specialty glasses. In electronic devices and semiconductors, it is utilized to manufacture high-dielectric constant films, improving capacitor performance. In the catalyst field, it can catalyze reactions such as olefin polymerization and alkane dehydrogenation. In the alloy field, it is used to synthesize aluminum-scandium alloys and others.