In this paper, we used the methods of analysis the main effect amount, coefficient of variability, reliability of standard deviation, regression coefficient, high and stable coefficient of maize hybrid "Luyu13" based on the results of spring sowing middle-late maturation regional maize tests in Shanxi province during 2002-2003.The results showed that it’s a good maize hybrid sowing in spring in middle-late area in Shanxi province and other corresponding ecological area which has large crop potentiality, high and steady productive, wide adaptation.