’Jidan 261’is an elite maize hybrid selected by Maize Research Institute,Jilin Academy of Agricultural Sciences.It has been recommended as the mainly planting hybrid in Jilin Province since 2007.From 2006 to 2008,’Jidan 261’has been chosen as a check variety of the pre-registration and registration test in the Northeast mid-mature group,National corn hybrid registration test.And it also be selected as the check hybrid in the mid-mature group of Jilin province corn hybrid registration test from 2006 to 2012.In this study,we discovered some underlying factors generating elite corn hybrids by analyzing yield character related heritability,heterosis and so on.This will provide efficient theoretical basis for maize inbred line selection and stronger hybrids combination.