Peatmoss and construction waste materials were selected as the raw material, 6 treatments were set up, and rural soil was taken as a comparison. According to the tests on the basic physical and chemical properties of substrate,growth index and the rate of water loss, and combing tests of permanent wilting plants, it was found that 90% grassland substrate carbon: 10% broken roof tiles on the combination was more suitable as a light green Sedum plants substrate compositions.