Mainly used for making metal samarium, samarium cobalt permanent magnet materials, electronic devices and ceramic capacitors. It can be used as glass additive for infrared absorption, coating in photosensitive materials, samarium cobalt permanent magnet materials and raw materials for production of metal samarium. For electronic devices, it can be used as an infrared absorption and luminescent glass additive to prepare samarium cobalt permanent magnet materials and raw materials for the production of metal samarium. Samarium oxide is also a catalyst in chemical industry.