Abstract: The main species of Malus and Chaenomeles , usually regarded as“the most gaily-colored flower of the country”, are one of the traditional famous flowers in China , with many species, a long use history and deep cultural connotations. In present, the tree species resources of Malus and Chaenomeles have not been systemically assorted，and only a few traditional species and varieties are applied in landscape architecture, the utilizing ways are fewer. According to the relative literature, this paper surveys the taxonomical adscription, the main botanic characters and ornamental characters of the Malus and Chaenomeles species which have been used or have potential applied value in landscape architecture, summaries the expressional forms of their culture, states their disposition and applied forms in the classical and modern landscape, points out the problems that lie in the development and application of them in landscape, raises the exploitation measures and forecasts the application prospect.