Aramid insulation paper, as a high-performance electrical insulation material, plays an irreplaceable role in new energy electric drive insulation. Currently, aramid materials used in new energy motors are mainly DuPont's Nomex. Under the background of cost reduction by automobile enterprises, domestic replacement has always been an important way to reduce costs. In recent years, with the increase of domestic new energy electric drive applications and higher localization rates, domestic enterprises have continuously increased investment in aramid insulation paper research and development, promoting its technological innovation and development. Domestic aramid insulation paper has made significant progress. On one hand, domestic enterprises have successfully developed various high-performance aramid insulation paper products, with electrical properties, mechanical properties, and thermal stability reaching international advanced levels. On the other hand, domestic enterprises are constantly improving and innovating in the production process and equipment of aramid insulation paper. Through the introduction of advanced foreign technology and equipment, combined with independent research and development and innovation, China's aramid insulation paper production efficiency and product quality have been significantly improved.