Abstract: Plant protein is one of the main resource of human proteins.But the antinutritional factors existing widely in it inhibit body ’s absorption for plant proteins,even do harm to human’s health.This article discussed the main antinutritional factors in plant proteins:digestive enzyme inhibitor,lectin and allergen,and introduced chiefly the antinutritionability and inhibition mechanism of these three sorts of antinutritional factors.

Key words: Antinutritional factors Plant protein Digestive enzyme inhibitor Lection Allergen