4 representative forest stands in Shenzhen Xianhu Botanical Garden: secondary forest, Aquilaria sinensis forest, Acacia mangium forest, and mixed Acacia mangium forest were regarded as research subjects. Fixed sampling sites were set up to analyze the soil profile situation and measure the physical properties of the soil under the forest, included soil bulk density, porosity, and hydrological characteristics,revealing the differences in soil physical properties among different forest stands in typical urban forests. The results indicated that among the 4 forest stands,the fertility of secondary forest was relatively high, and the sediment layer of soil in each forest stand was relatively thick; The soil bulk density of secondary forest and Aquilaria sinensis forest was relatively suitable; The soil porosity of secondary forest was relatively high; The saturated water holding capacity and capillary water holding capacity of each soil layer in secondary forests were relatively high, indicating high soil quality and possibly better growth status of plants on the forest. In summary, the soil fertility, bulk density, porosity, saturated water holding capacity, and capillary water holding capacity of each soil layer in secondary forest were relatively high, indicating a high soil quality that was conducive to plant growth.The research results provided references for the sustainable utilization of forest soil.