The article delves into the critical role of diaphragms, specifically PPS and PSF materials, in electrolyzers for hydrogen production. PPS diaphragms are widely used in alkaline electrolyzers due to their excellent properties, impacting electrolyzer performance and costs. However, challenges in production and market competitiveness exist. On the other hand, PSF membranes are crucial for PEM electrolyzers, with Dongyue Future leading in the domestic market. The increasing efficiency and potential cost reductions of PEM electrolyzers drive the market demand for PSF membranes. The article also highlights the development of new materials like fire-resistant and acid-resistant substances, diversifying the hydrogen energy industry chain. Despite challenges, the future outlook for diaphragm materials in the hydrogen energy industry is optimistic, with the necessity for continuous advancements in quality and technology to meet market demands.