The invention provides a constant-temperature and constant-humidity ground source heat pump air conditioning system for an indoor and outdoor machine cabinet. The constant-temperature and constant-humidity ground source heat pump air conditioning system comprises a refrigeration or heat supply circulation structure and a circulation structure, wherein the refrigeration or heat supply circulation structure consists of a ground source heat pump machine unit, an air outlet, an air outlet pipe, an air inlet, an air return pipe and a plurality of machine cabinets, the circulation structure consists of a ground source side water return pipe, a water pump, a same-path pipe, a ground source side water outlet pipe and a plurality of groups of ground buried pipes, and is used for utilizing shallow layer ground energy, each sensor arranged on the air conditioning system is connected with an intelligent controller arranged on a ground source heat pump machine unit through a communication bus or a signal wire, and the starting and the stopping of the ground source heat pump are directly controlled by the intelligent controller. The constant-temperature and constant-humidity ground source heat pump air conditioning system has the advantages that huge recycled energy in soil can be sufficiently utilized, the refrigeration, heat supply, dehumidification and humidification are realized, the operation cost is low, the energy-saving efficiency is high, in addition, any waste gas, waste water and waste slag are not discharged to the outside, and the underground water is not influenced. The constant-temperature and constant-humidity ground source heat pump air conditioning system belongs to the field of green air conditioners.