The invention provides a parameter setting system and a parameter setting apparatus. The parameter setting system includes a storage unit that memorizes a history of parameter values in an image forming apparatus in association with a type of paper, an acquiring unit that acquires a trend of parameter values in plural image forming apparatuses of the same type with the image forming apparatus with respect to each type of plural other paper sheets in which the number of types of switched paper and the number of histories are greater than or equal to a threshold value, and a calculating unit that calculates a parameter value to be set with respect to the type of switched paper based on the trend of parameter values acquired with respect to the type of switched paper and each type of the plural other paper sheets, and the history corresponding to each type of the plural other paper sheets.