A test support apparatus for a plant monitoring system, includes: a list holding unit configured to hold a test list which describes at least a plurality of test items and information about a testing sequence for the test items; a screen generating unit configured to generate a display screen provided based on an output signal from a control unit which controls a plurality of connected devices; a data acquisition instructing unit configured to give instructions to acquire image data of the display screen based on the testing sequence in the test list; and a data linking unit configured to link the acquired image data to the test items on the test list.