A production index information generating device (100; 200), comprising: a storage unit (110; 210) which stores log information; the log information specifying: a production device; processing targets processed by the production device; start time at which processing on the processing targets starts; and end time at which the processing on the processing targets ends; and a control unit (120; 220), wherein the control unit (120; 220) is adapted to perform the following processing: grouping of the processing targets identified by the log information, that the end time falls within a predetermined interval; classifying the processing targets contained in the groups into classes based on a number of the processing targets contained in each of the groups; generating cycle time information for each of the classes, which specifies cycle time of each of the processing targets contained in corresponding one of the classes; outputting the cycle time information to an output unit in a predetermined display form; selecting, based on the cycle time information, in a coordinate system having one axis representing the cycle time and another axis representing a number of the processing targets corresponding to the classes, for each of the classes, cycle time which corresponds to one of the processing targets contained in a corresponding one of the classes, as a reference point, according to a predetermined criterion, to obtain reference points; and determining a regression line of the reference points, characterised in that the control unit (120; 220) is adapted to set a slope and an intercept of the regression line as production index information of the production device. a storage unit (110; 210) which stores log information; the log information specifying: a production device; processing targets processed by the production device; start time at which processing on the processing targets starts; and end time at which the processing on the processing targets ends; and a control unit (120; 220), wherein the control unit (120; 220) is adapted to perform the following processing: grouping of the processing targets identified by the log information, that the end time falls within a predetermined interval; classifying the processing targets contained in the groups into classes based on a number of the processing targets contained in each of the groups; generating cycle time information for each of the classes, which specifies cycle time of each of the processing targets contained in corresponding one of the classes; outputting the cycle time information to an output unit in a predetermined display form; selecting, based on the cycle time information, in a coordinate system having one axis representing the cycle time and another axis representing a number of the processing targets corresponding to the classes, for each of the classes, cycle time which corresponds to one of the processing targets contained in a corresponding one of the classes, as a reference point, according to a predetermined criterion, to obtain reference points; and determining a regression line of the reference points, characterised in that the control unit (120; 220) is adapted to set a slope and an intercept of the regression line as production index information of the production device. grouping of the processing targets identified by the log information, that the end time falls within a predetermined interval; classifying the processing targets contained in the groups into classes based on a number of the processing targets contained in each of the groups; generating cycle time information for each of the classes, which specifies cycle time of each of the processing targets contained in corresponding one of the classes; outputting the cycle time information to an output unit in a predetermined display form; selecting, based on the cycle time information, in a coordinate system having one axis representing the cycle time and another axis representing a number of the processing targets corresponding to the classes, for each of the classes, cycle time which corresponds to one of the processing targets contained in a corresponding one of the classes, as a reference point, according to a predetermined criterion, to obtain reference points; and determining a regression line of the reference points, characterised in that the control unit (120; 220) is adapted to set a slope and an intercept of the regression line as production index information of the production device.