A collimation and rectification integrated device used in container inspection system, relating to radiation scan imaging detection technical field. The present utility model relates to a collimation block, a rectification block, a servo motor, and a leading screw connecting to the output end of the servo motor and supported by two bearing pedestals. The servo motor and each bearing pedestal are mounted on a soleplate; the leading screw is equipped with suitable nuts. The structural characteristics of the collimation and rectification integrated device are: the clearance between the collimation block and the rectification block is mounted on a retaining plate to form an overall structure. A pallet is provided under the retaining plate; sliding boards are provided on both sides of the pallet; a connection board is provided in the middle of the pallet; sliding boards are provided on the guide rails on both sides of the soleplate; the connection board is mounted to the nuts. When the servo motor is started, the nuts are driven by the leading screw so that the collimation block and the rectification block on the retaining plate can move as a whole. Compared with prior art, the utility model helps save mounting space and reduce equipment weight.