Abstract: In 19th century, Britain was the leader of western garden art and has provided a lot of precious heritages for garden art in the world. From the viewpoint of evolution of style and form of garden, this paper explores the theories and practices, characteristics and representative figures of British garden art in time order to reveal the whole evolution process of British garden art in 19th century. There are similarities between Chinese gardens today and British gardens in 19th century, such as the chaos in style and form. The exploration of British garden designers at that time still has enlightenment to Chinese garden designing.