As an emerging soil conditioner, food waste biogas residue has the advantages of high nutrition and low toxicity. The application of biogas residue to landscaping is an important part of wet waste resource treatment. In this study, wet litter was used in landscaping soil, and the soil pH, EC and organic matter all showed an upward trend. The soil density tended to decrease with the increase of biogas residue application, and the treatment with 40% (V/V) biogas residue was significantly lower than the treatment without biogas residue (P<0.05). Soil porosity and soil water holding capacity tended to increase, and the treatment with 40% (V/V) biogas residue had significantly higher saturated water holding capacity and field water holding capacity than the treatment without biogas residue (P<0.05). In addition, with the increase of biogas residue addition, the survival rate of Sapium sebiferum showed a precipitous decreasing trend and the plant height also showed a decreasing trend. The survival rate of Sapium sebiferum showed a slow decreasing trend and the plant height showed a decreasing trend. The growth of Sapium sebiferum (tree) and Lagerstroemia indica (shrub) was inhibited by the residue, but Lagerstroemia indica tolerated the residue better than Sapium sebiferum. The relative chlorophyll content of both Sapium sebiferum and Lagerstroemia indica were not significantly different (P>0.05).