A combination transport device used for a containerized cargo inspection system, and a containerized cargo inspection system thereof. The combination transport device comprises: a sectional-type translation device of a detection channel, i.e. a translation input device (13) and a translation output device (14) which are used for translating a cargo to be inspected to enter and exit a detection channel of the inspection system, a loading device (11) used for loading the cargo from the vicinity of the ground and lifting the cargo to a operating height flush with the translation device of the detection channel, and an unloading device (12) used for lowering the cargo from the operating height flush with the translation device of the detection channel to the vicinity of the ground, wherein respective inner side ends of the translation input device (13) and the translation output device (14) adjoin each other in or in the vicinity of the detection channel. The combination transport device realizes transport of a c
