An operation for interposing a processing program (CP) in a job list (JL) is simplified. A dental processing machine-operating device (11) includes a first selecting unit (124) that selects at least one of processing programs (CP) from among processing programs (CP) that are stored in a processing program storage unit (121) or processing programs (CP) that are contained in a job list (JL). A first interposing process unit (125) is configured to interpose the at least one processing program (CP) selected by the first selecting unit (124) into the job list (JL) next after one of the processing programs (CP) that is currently being executed by the dental processing machine (1).
