With the deepening advancement of teaching modernization, higher education is accelerating its digital and intelligent transformation. Blended learning, as a new model integrating the advantages of online and offline learning, has become an important direction for teaching reform in universities. In this process, the self-directed learning platform, serving as the core support of the blended learning environment, directly impacts teaching effectiveness and talent cultivation quality through its construction quality. Based on explaining the collaborative mechanism of blended learning and the characteristics of Self-directed Learning Platforms, this paper deeply analyzes the current achievements in constructing Self-directed Learning Platforms in universities and the practical challenges such as insufficient technical support and poor resource integration. Focusing on the needs of the blended learning environment, targeted construction strategies are proposed from three dimensions: technical support, content resource development, and operational management. The aim is to provide practical guidance for the optimization and upgrading of Self-direct Learning Platforms in universities, help enhance students' self-directed learning abilities, and promote the digital transformation of higher education and innovation in teaching models.