Abstract: Under field conditions with medium-texture soil and high, medium fertility, Using the methods of gray connecting analysis to fully analyze the main agronomic Characters which affects output of the High-gluten wheat provided by 2004—2005 Henan Dazhong seed company’s nine weak vernal wheat varieties. Comparing their degrees of gray connecting, and the results to indicate the agronomic characters and the output relativity are in turn: seed number of each ear (0.7147), per-blooming period (0.731), each plant of number of ears (0.6946), seed number of each hectare (0.6873), growing period (0.6347), basic seedlings (0.56), post-blooming period (0.542). The result can provide the theoretical basis of the high production of the week vernal wheat in Henan province and the technology of the high production cultivation.