| An inbred line LY-1 with 7-10 leaves above ear was developed from an introduced maize hybrid by continuous selfing. In order to study the genetic characteristic of the number of leaves above ear, the line LY-1 as the male was respectively crossed with three different inbred lines L583 (with 4-5 leaves above ear), LS-1(with 3-4 leaves above ear) and Chang7-2(with 5 leaves above ear) as the females to obtain their progenies and segregation populations. Four traits for leaves above ear, plant height, ear height and the coefficient of ear height were analyzed. The results showed that the number of leaves above ear in F1 was between the corresponding parents and close to the high parents, and has no obvious heterosis. It appeared incomplete dominant inheritance for the number of leaves above ear, but the plant height, ear height and coefficient of ear height in F1 were higher than those of the high parents and existed extremely strong heterosis. The analysis of correlation illustrated that significantly negative relations existed between the number of leaves above ear and coefficient of ear height, but the relations between plant height and the number of leaves above ear, and ear height, between ear height and coefficient of ear height, are highly positive. According to the heritability of each trait, the average heritability of plant height and ear height were higher with over 75%, the following was the coefficient of ear height, but the heritability for the number of leaves above ear was the lowest with only 62.43%. Therefore, the leafy inbred lines LY-1 could be used as a resource with multiple leaves above ear to improve germplasms and develop new varieties, and enhance the lodging resistance of plants by reducing the relative ear height in maize.