The invention discloses a heat energy sustainable utilization and coal fire control system and method for a coal field fire zone. The system is composed of a vacuum liquid tank, a cooler, a cooling fan, horizontal drill holes, a high-temperature-resistant circulating pump, a thermoelectric power generation module, a voltage stabilizing and increasing module, a storage battery and an inverter. The main operating method includes the steps that the coal field fire zone is isolated with a machine excavation method, the horizontal drill holes are formed in the independent coal field fire zone, a heat carrier absorbs heat in the fire zone through the horizontal drill holes to become a high-temperature heat carrier, the high-temperature heat carrier enters the vacuum liquid tank under the action of the high-temperature-resistant circulating pump, and the thermoelectric power generation module at the bottom of the vacuum liquid tank generates power with the temperature difference between the top end and the bottom end of the thermoelectric power generation module. By means of the system, the heat of the coal field fire zone can be cyclically and sustainably extracted through the heat carrier, heat energy is converted into electric energy through thermoelectric power generation, and thus resource waste is reduced; meanwhile, fire source spreading is prevented by isolating the coal field fire zone, the dual effects of waste energy recycling and coal fire control are achieved, and the system has high practicability.