Abstract: As the crucial raw material for strategic emerging industries like semiconductors and photovoltaics, an in-depth study on high-purity quartz’s global supply and demand status and development trends can provide a theoretical basis for trade strategies. To this end, based on global high-purity quartz trade data from 2019 to 2023, using the approach of complex network and network motifs, this study systematically investigates the evolution characteristics of bilateral and multilateral trade patterns in the global high-purity quartz trade. Main findings include: ① the global trade scale of high-purity quartz remains stable, but trade volume has multiplied. ② The trade pattern manifests “dual-core and multi-demand” structure, where the United States and Germany have constituted 60% global export volume as supply centers, while Asian countries including China, Japan, South Korea, and Vietnam serve as main demand markets. ③ A remarkable trend of regional transfer has emerged in trade patterns, Vietnam’s import demand is growing rapidly, while Malaysia’s export status has been significantly enhanced. ④ China’s multilateral trade pattern is relatively diverse and primarily characterized by stable regional trade forms. In contrast, Germany, the United States, and Japan predominantly play the role of intermediaries. Therefore, the global high-purity quartz trade network is developing in a more complex and diversified trend. China is suggested to actively build a multilateral trade pattern and to play a leading role in local trade patterns, especially to develop the trade cooperation with emerging supplier countries.