With the development of the Internet, it is imperative to build a networked college English teaching platform. Based on the analysis of the needs of college English teaching, this study, guided by communicative language teaching and task-based teaching methods, and utilizing instructional design theory, constructs a comprehensive blended learning platform for college students. The platform's functional design emphasizes three main modules: resources, interaction, and assessment, as well as an English practice community, achieving content richness and process interaction. Technically, the platform adopts a B/S architecture and is developed using mainstream frameworks to ensure scalability and performance. Analysis of the pilot run shows that the platform significantly enhances students' learning interest and engagement, yielding favorable teaching results, although continuous optimization is needed. Overall, this research has important theoretical and practical significance, providing a template for networked solutions in current college English teaching and laying a foundation for future related studies.