Abstract:By using weight test value and magnetic iron ore grade data obtained in the course of exploration of Zhaicun iron deposit in Jining city, regression analysis has been carried out, and gained the regression equation y=2.74+0.026x. After significance and precision test, combining with actual practices, it is proved that regression equation has significance and high prediction accuracy. By using this equation, the value of a small weight of Zhaicun iron deposit can be predicated.