A low-temperature transport device is for the purpose of transporting a transport object in a state in which the transport object is kept at a low temperature for a long period of time. The low-temperature transport device includes a thermal insulation container, a plurality of pieces of dry ice disposed in the thermal insulation container so as to cool a transport object, a support member disposed in the thermal insulation container to support the transport object, and a first space formed between the transport object supported by the support member and an inner bottom surface of the thermal insulation container. The first space is filled with the dry ice.