To provide a geothermal heat recovering system using a geothermal heat recovering pile not needing high performance of a heat medium transporting driving means to recover geothermal heat, and efficiently recovering geothermal heat.

In this geothermal heat recovering system, a number of geothermal heat recovering piles 1 driven in the ground surface are divided into a plurality of groups 6, 7, 8, and a control device 16 is mounted to perform the control for changing the groups recovering geothermal heat with time, while keeping a state that geothermal heat is recovered in geothermal heat recovering heat medium passages of a part of the groups, and geothermal heat is not recovered in the geothermal heat recovering heat medium passages of the remaining groups.