Characteristics of soil temperature variation in karst area are of great significance to the study of soil activity and microclimate change. To verify the variation characteristics of soil temperature in karst areas and its relationship with environmental factors, four typical land types including Zanthoxylum bungeanum (HJ), Hylocereus undulates (HLG), Lonicera japonica (JYH) and wasteland (HD) in the Karst plateau canyon were taken as research objects. Soil moisture monitoring system (ECH2O) was used for continuous fixed-point monitoring of different sites. The dynamic change characteristics of soil temperature at different time scales and its relationship with environmental factors were analyzed. The results showed that the daily variation of soil temperature was characterized by the sharpest diurnal variation of soil temperature appeared at 10 cm, and the deeper the soil depth, the smaller the diurnal variation. There was a great diurnal variation of soil temperature in summer but a smaller in autumn and winter. The diurnal variation of soil temperature in HL and JYH were significantly greater than that in HJ and HD as the soil depth deepens. There was a hysteresis effect in the diurnal variation of soil temperature. The daily variation of soil temperature at 10 cm and 25 cm of different land types showed a cubic function. The variation of soil temperature in different seasons was as follows:HLG > HD > HJ > JYH. The vertical variation characteristics of soil temperature was that the deeper the soil layer in summer, the lower the soil temperature was. The deeper the soil layer in autumn and winter, the higher the soil temperature. The vertical variation coefficient of soil temperature was greater in winter than in summer. There was significantly positive correlation between soil temperature with atmospheric temperature, solar radiation and soil moisture content (P<0.05). There was also a significantly close correlation between soil temperature variation with soil properties such as soil bulk density, porosity, soil texture, and organic carbon. The diurnal variation of soil temperature in HJ was the smallest, which has a close relationship with the higher soil moisture content and porosity, the better soil water holding capacity and the smaller bulk density. The soil temperature regulation capacity of HJ was the best among the four land types, therefore, the land type of HJ can improve soil properties and soil fertility to a great extent in the process of ecological restoration in karst areas. This study provides a scientific basis for ecological restoration and some reference for ecological benefits evaluation of vegetation in karst areas.