Energy-saving hog house system using shallow geothermal energy for heating and cooling

The utility model is applicable to the technical field of agricultural cultivation, and provides an energy-saving hog house system for heating and refrigerating by utilizing shallow geothermal energy, which comprises a ground heat exchanger, a heat pump unit water return pipe, a heat pump unit water supply pipe, a heat pump unit, a hog house water inlet pipe, a hog house water outlet pipe and a hog house main body, the heat pump unit water return pipe is connected with an inlet of the buried pipe heat exchanger, the heat pump unit water supply pipe is connected with an outlet of the buried pipe heat exchanger, and ground source side circulating water exchanges heat with the stratum in a buried pipe and then enters the heat pump unit. The hog house water inlet pipe and the hog house water outlet pipe are both connected with the heat pump unit, hot water or cold water lifted by the heat pump unit enters the hog house body through the hog house water inlet pipe, and heat or cold is transmitted to the space in th