Abstract: with the development of science and technology, people's aesthetic views are constantly changing. Landscape design is a comprehensive process, not only requires designers to have superb design skills, but also requires designers to have good aesthetic taste. In the process of landscape design, lighting design is one of the most important links, which plays an intuitive and important role in the aesthetic composition of the whole landscape. Therefore, good lighting design can add different styles to the landscape. This paper, starting from the actual design process, expounds the principle and importance of lighting design, hoping to provide a new idea for the design of landscape.