A sequence program editing apparatus according to the present invention includes: program storing means for storing an application program including the sequence program; information storing means for storing symbol information and/or comment information used in the sequence program; selecting means for, in a state in which a plurality of application programs including at least first and second application programs runs, selecting at least a part of a sequence program displayed on an application screen run by the first application program; extracting means for extracting the symbol information and/or the comment information included in at least the selected part of the sequence program from the information storing means; and copy means for copying at least the selected part of the sequence program on the sequence program displayed on the application screen run by the second application program and copying the extracted symbol information and/or the extracted comment information on the information storing means of the second application.