The urban development of landscape architecture is mainly to improve the local environment and improve the quality of urban environment. At the same time, the quality of water and soil varies greatly in different urban climate conditions and different geophysical conditions. The design of urban park should be carried out in the environment with both relief conditions and geomorphic features, especially the drainage ditch and soil. The selection of suitable plant types should be combined with local aquatic and geological characteristics as much as possible. For example, in areas with relatively dry climate, plants with higher drought tolerance should be preferred; in areas with rich soil, priority should be given to plants with more environmental protection; in desert areas, plants that are not allowed to harden due to wind and sand should be preferred when designing urban gardens. It not only helps to beautify urban gardens, but also promotes plant growth.