A printing apparatus which enables to efficiently improve the productivity of the printed matter and to efficiently supply the resource. It is determined whether a printing interrupting factor occurs regarding a job for which a printing process is performed. When it is determined that the printing interrupting factor occurs regarding the job, a subsequent job following the job is controlled to be performed in priority to the job. When the job, regarding which, it is determined that the printing interrupting factor occurs, is the job related to image quality adjustment, the subsequent job is restricted to be performed in priority to the job regarding which, it is determined that the printing interrupting factor occurs.