The preliminary analysis of esterase and peroxidase isozyme in stable T- type wheat shows: the esterase isozyme bands in the milk stage is distinct, obvious and abundant; the diversity of different combination is evident but the effect of peroxidase is poor; the mutual complement of the homogenate of esterase parents can basically reflect the zymegram type of F1 generation. Under general condition, the male parent of hybrid enzyme type,or of complementary enzyme type,or of good partial quality,may serve as a strong-dominant combination while the one of non-diversity type or of female parent type has weak advantages. The result of determining the oxidizing activity in the seedling homogenate indicates that the hybrid variety in strong-dominant combination sonsumes more oxygen than that in weak-dominant combination; in a combination that is especially superior to the parents, the oxidizing activity in the homogenate of complementary parents also has the tendeney of being superior to its parents. But in an ordinary-dominant or weak-dominant combination,the regularity is not distinct.