In an endoscope cleaning work support device, an operation reception unit received an input from a cleaner. A display control unit controls the display unit to display a procedure for manual cleaning of an endoscope on a display unit step by step. A measurement unit measures a first period of time from a start time of a procedure in a current step marked by reception of an input for displaying the procedure in the current step by the operation reception unit, to an end time of the procedure in the current step marked by reception of an input for displaying a procedure in a subsequent step by the operation reception unit. A comparison determination unit compares a reference period of time defined for each step for displaying the procedure with the first period of time. The display control unit displays information for alerting the cleaner when the first period of time is shorter than the reference period of time on the display unit.