To provide a compartment device of a refrigerator truck and the refrigerator truck capable of improving cold storage efficiency.

This compartment device 4 of the refrigerator truck for partitioning a cold storage room of the refrigerator truck 1, comprises an upper partition portion 10 defined by partitioning an upper space of the cold storage room 2 by a curtain 12 which is approximately vertical, and approximately perpendicular to the the cold air delivering direction to the cold storage room 2, in a state that the curtain 12 can be opened, a plurality of lower partition portions 20A, 20B defined by partitioning a lower space of the cold storage room 2 approximately in parallel with the upper partition portion 10 in a removable state, and being arranged approximately in parallel with each other, and a moving support portion 30 supporting the upper partition portion 10 movably in the longitudinal direction. The upper partition portion 10 partitions the lower partition portions 10A, 10B and the inside of the cold storage room by being moved to the approximately same position in the horizontal direction, with any of the plurality of lower partition portions 10A, 10B.