Truck with constant-temperature carriage

The utility model relates to the technical field of trucks, in particular to a truck with a constant-temperature carriage. The truck with the constant-temperature carriage comprises the carriage and a refrigerating unit. A mounting box is fixedly connected to the front side in the compartment, a loading opening is formed in the front side of the mounting box, and an air inlet is formed in the rear side of the mounting box; a machine inlet corresponding to the machine loading opening is formed in the front side of the compartment; the refrigerating unit comprises an outer frame, a refrigerating inner unit and an exhaust outer unit. The refrigeration inner unit and the exhaust outer unit are both installed on the outer frame. The outer frame is detachably connected to the mounting box, the refrigerating inner unit extends into the compartment along the air inlet, and the exhaust outer unit is arranged at the machine inlet. The utility model solves the problems that the conventional refrigerator car is high in o