Abstract: The experiment studied the relationship of source and sink through six dense-resisitance super-high-yield corn varieties（JinChuang998 ,XianYu335 ,ZhengDan958 ,DaMin3307 ,KX3564 ,JinChuang No.3）.It revealed that the super-high-yield corn varieties of dry matter accumulation, leaf area index, photosynthetic characteristics and chlorophyll relative content and yield components of source-sink characteristics influenced on yield. Results showed that JinChuang No.3 had a high green degree. After flowering period, per plant dry matter quality of JinChuang No.3 was bigger and DaMin3307 was second and there was no significant difference between them, so they had the sufficient source. From ear grain number and thousand grain quality, JinChuang No.3 and DaMin3307 had larger spike grain number and thousand grain quality and their sink were biggest. From plant trait, the plant height and ear heiht of JinChuang No.3 were in the middle and stem diameter was big and zero lodging. JinChuang3 had dense-resistance characteristics. Take ＂source＂ and ＂sink＂ and dense-resistance into consideration, eventually the variety with high yield potential was JinChuang No.3. Therefore ,the variety with sufficient source and sink should he chosed at the same time through cultivation measures to improve its corresponding index to achieve the goal of super-high-yield.