The invention relates to the field of air adjustment in a truck cab and refrigeration in a container, and a refrigerator truck refrigerating unit with double evaporators is designed for the situation suitable for a container refrigeration chamber and the cab to share one compressor and one condenser. The refrigerating unit can automatically detect the temperature of an air outlet to control start and stop of the compressor, and respective needed temperatures are reached. The refrigerator truck refrigerating unit is mainly composed of the condenser, a connection pipeline, the refrigeration evaporator, a controller, the cab evaporator and the compressor. A traditional refrigeration manner that two sets of independent refrigerating systems are used for providing low-temperature refrigeration for a refrigeration chamber and providing air conditioner cooling for the cab has the defects that the size is large, the weight is large, installing is complex, and cost is high, and the refrigerator truck refrigerating unit effectively overcomes the defects and has very high practicability.