A printing system includes a processing unit configured to cause a sheet processing unit to execute a sheet processing including a folding processing and a trimming processing on a printed sheet by executing a job, a determining unit configured to determine whether a fold line of a sheet folded by the folding processing is cut out by the trimming processing, and a control unit configured to perform controlling such that the fold line of the sheet folded by the folding processing is not cut out by the trimming processing if the determining unit determines that the fold line of the sheet folded by the folding processing is cutout by the trimming processing.