The invention relates to a drill cutting biological treatment system applied to a field environment, and belongs to the technical field of environmental governance. The drill cutting biological treatment system applied to the field environment is characterized by comprising automatic control equipment, solar cell equipment and a bio-fermentation cabin, wherein the automatic control equipment is composed of a humidity sensor, a PLC controller and a spraying system; a temperature sensor is connected to the PLC controller; the PLC controller is connected to the spraying system; the spraying system is in charge of humidifying the bio-fermentation cabin; the solar cell equipment is composed of solar cell panels, a storage battery and an inverter; the solar cell panels are connected to the storage battery, and the storage battery is connected to the inverter, so that a power supply is formed; and the humidity sensor and a humidifying spraying head are arranged in the bio-fermentation cabin. The drill cutting biological treatment system provided by the invention has the advantages of being subjected to automatic operation and solar power supply, being movable in the field, low in cost, green and environment-friendly, convenient for management, capable of effectively controlling humidity of a biological heap; and a biological treatment effect on drill cuttings can be obviously improved.