Abstract: The Sino-Singapore Tianjin Eco-city located in the coastal areas. In this area，the underground water level is high,the underground water is poor fluidity and is salt water in the top 100 m stratum，so the ability of energy transmission ofthe stratum is poor. In a energy supplyperiod, the cool/heat energy transfer from buried pipes cannot be dissipated in a short time, the cold/heat energyaccumulates around the buried pipes, so the energy efficiency of soil source heat pump system is low. The energy efficiency enhancement technique through artificial flow field can make the cold/heat energy transfer from buried pipes dissipated homogeneous, enlarge the temperature differenceofheat transfer, and enhance the energy efficiency of soil source heat pump system.