The digital transformation of the fashion industry has become a critical driver for innovation, especially in the sportswear sector, which demands high levels of functionality and aesthetics. This study presents the development and application of a VR-based visualization platform designed to revolutionize sportswear design. The platform integrates modular design, dynamic simulation, and real-time 3D modeling to enhance efficiency, flexibility, and user experience. Modular design principles enable rapid prototyping and customization, while dynamic simulation powered by Finite Element Analysis (FEA) ensures precise performance evaluation. The platform also features a consumer co-creation module, allowing real-time interaction between designers and users for personalized customization. By combining advanced technologies and sustainable practices, this platform addresses key challenges in the sportswear industry, such as efficiency, environmental impact, and user-driven design. Experimental validation with professional designers demonstrated significant improvements in design efficiency, realism, and consumer engagement. This research provides a novel solution for the digitalization of the sportswear industry and lays the groundwork for future innovations in intelligent and sustainable apparel design.