A wiper operation system suitable for use in a construction machine including an operator's seat and a wiper device, to allow an operator in the operator's seat to perform an operation for selecting a desired wiper motion mode from a plurality of wiper motion modes different from each other in at least one of a motion interval and an operation speed and operating the wiper device in the selected wiper motion mode, the wiper operation system comprising: a display including a display screen and disposed at a position where the display screen can be viewed by an operator in the operator's seat; an operation reception unit that receives a mode selection operation by the operator to select one wiper motion mode from the plurality of wiper motion modes; a wiper control section that makes the wiper device perform a motion in the wiper motion mode selected by the mode selection operation, wherein the display screen of the display includes a wiper motion display part that performs a display of a plurality of icons (26; 27, 28, 29) indicating the plurality of wiper motion modes that can be selected by the mode selection operation, respectively, and an identification display for enabling the icon (27, 28, 29) corresponding to the wiper motion mode selected by the mode selection operation among the plurality of icons (26; 27, 28, 29) to be identified, characterized in that the operation reception unit includes a push switch that receives a pushing operation to start and stop the motion of the wiper device and a dial switch that receives a rotational operation to select one icon (27, 28, 29) from the plurality of icons (26; 27, 28, 29), and the wiper control section is configured to make the wiper device perform a motion in the wiper motion mode corresponding to the icon (27, 28, 29) selected by the dial switch. a display including a display screen and disposed at a position where the display screen can be viewed by an operator in the operator's seat; an operation reception unit that receives a mode selection operation by the operator to select one wiper motion mode from the plurality of wiper motion modes; a wiper control section that makes the wiper device perform a motion in the wiper motion mode selected by the mode selection operation, wherein the display screen of the display includes a wiper motion display part that performs a display of a plurality of icons (26; 27, 28, 29) indicating the plurality of wiper motion modes that can be selected by the mode selection operation, respectively, and an identification display for enabling the icon (27, 28, 29) corresponding to the wiper motion mode selected by the mode selection operation among the plurality of icons (26; 27, 28, 29) to be identified, characterized in that the operation reception unit includes a push switch that receives a pushing operation to start and stop the motion of the wiper device and a dial switch that receives a rotational operation to select one icon (27, 28, 29) from the plurality of icons (26; 27, 28, 29), and the wiper control section is configured to make the wiper device perform a motion in the wiper motion mode corresponding to the icon (27, 28, 29) selected by the dial switch.