Abstract: The artificial natural net can used to predict the property of the strip formed in the molten steel during inverse casting. The property including in casting thickness and new organized grain are comprehensively forecasted. The influences on the property are discussed by the main operated factors during inverse solidification. The new method to predict the property is provided. The new organized grain little changes with molten steel superheat, mother sheet thickness and dip time,but the cast sheet thickness greatly changes with these main operated factors..The predicted result of the model corresponds to the experienced result.