Abstract: This study aims to explore the transformation relationship between ecological knowledge (ecological language) and ecological practice (landscape ecological planning and design language, LEPD, in abbreviation) in the field of landscape planning and design. It is hoped that through a set of logical, step-by-step, simple and effective transformation Way to advance the issue of continuing discussion in this academy. On the basis of research review, it is concluded that the key to solve the problem is to find out the effective way to transform the ecology language into the landscape ecological planning and design language (LEPD, in abbreviation). From a number of angles to examine the deep relationship between the two, it put forward a three-level LEPD system, that the middle level of the application of basic research is to link the application of ecology and LEPD bridge. Furthermore, through analyzing a classic case to study the nature of zoning based on island biogeography, it is found that the bridge from the basic research of ecology to planning and design is spatial principle and spatial pattern .And then, it proposed the T-P-C conversion path we propose a 5-step transformation method with universal. The study hopes that through this five-step transformation method, we will guide the more basic knowledge of ecology to be rational and effective in the concrete landscape planning and design practice.