Abstract: Trial manufacturing condition proposing system includes a characteristic evaluation data preprocessing unit, a feature value selection processing unit, a regression model creation processing unit, and a trial manufacturing condition proposing processing unit. The characteristic evaluation data preprocessing unit applies preprocessing to the characteristic evaluation data indicating an evaluation result of characteristics of the material. The feature value selection processing unit executes feature value selection processing on the characteristic evaluation data to which the preprocessing has been applied. The regression model creation processing unit executes regression model creation processing on the characteristic evaluation data, to which the preprocessing has been applied, based on the result of the feature value selection processing.