Abstract: The paper analyzed the main characters of the Henan early maturity maize region test in 1999 by the method of the factor analysis .The result showed: the spike location、 the spike length、 the growth period、 the row grains、 the plant height and the forming grains rate were easy to cooperatewich, yet the Know number, the Bald tip and TGW were difficult. Through enhancing the row grains and the spike length and coping witch the relationship of the row numbers and the low-grain rate to the aim with the character of the shorter growth period . more row grains, higher forming grains rate and lower plant height was the important way to improve the main yield.