Abstract:Gallium (Ga) plays an important role in the development of global scattered metal industry. There is still a big gap between China and developed countries in the high purification processes of Ga elements, although China has the ability to produce high-purity Ga. A large number of high-purity Ga and its compounds rely on imports, which seriously restricts the development of emerging industries related with Ga and hinders the independent control of the next generation of advanced materials and devices. Under world economic integration and quick development of science and technology, enhancement of high purification technology and expand of practice application are especially important for valuable Ga by developing new quality productivity and strengthening investment in scientific and technological innovation, further improving the international competitiveness of our country in the advanced materials industry. Based on the overview of research background and purity requirement, this paper summarizes the strategy and research results of high purification of Ga from multiple technological levels, including electrolytic refining, vacuum distillation, crystallization purification as well as multi-step combination, and looks forward to the future development of high-purity Ga applications and industrialization innovation.