Abstract: The cultivation of design innovation ability has become a core of landscape architecture planning and design teaching in the 21st century. In this context, the knowledge transmission oriented teaching mode is gradually transforming into the teaching mode of knowledge growth led by the design and scientific research. The teaching system and methods of digital landscape planning and design have become an important content of contemporary landscape education which needs to be enriched and applied urgently. The paper is based on the forefront of landscape architecture teaching and the systematic grasp of contemporary landscape architecture planning and design education. Exemplified by the teaching practice of landscape architecture department in Southeast University, it proposes the integration of digital landscape technology platform, the construction of “immersion” digital technology teaching environment, and the realization of collaborative innovation of digital platform and teaching system. In view of the limitations of traditional teaching methods, it uses the digital teaching platform to carry out innovative practice of “coupling” teaching method. In this way, the integration of empirical knowledge system can be strengthened, and the teaching mode of landscape architecture planning and design course can be explored and practiced systematically.