[Objective] To design the soil-electric-acoustic sand table model in order to provide a more intuitive dynamic demonstration model for soil and water conservation education. [Methods] Based on the characteristics of a small watershed, the type of soil erosion, and soil and water conservation measures were demonstrated with the light, electricity and sound system. The soil erosion intensity, the soil and water conservation measures and the monitoring of soil and water conservation were demonstrated with the aid of the miniature artificial rainfall system. [Results] The soil-electronic sand table model was actually a simplified small watershed, which was divided into 12 large demonstration areas. The model focused on the expression of topography, terrain and geographical characteristics of natural elements. It could demonstrated the watershed boundary and its relations with adjacent watersheds, the basic elements of watershed system, biological and engineering measures for soil and water conservation, hydrological network system composition and concentration process. [Conclusion] The soil-electronic-acoustic model could provide an emulative, interesting, experience, autonomic and interactive model for soil and water conservation teaching, and could enhance the students' learning interest and initiative, and improve the teaching effect.