In order to study the effect of protein, fat and dietary fiber on glycemic index(GI) of mixed food, the response of blood glucose and plasma insulin to nine diets with different components of food were tested by using glucose oxidase and radioimmunoassay. Glycemic index of 9 mixed foods show as follows, rice:83 2±3 1, rice+stir fry pork:72 0±14 0, rice+stir fry pork and celery:57 1±11 2, rice+stir fry garlic sprout:57 9±7 8, rice+stir fry garlic sprout and eggs: 62 8±16 7, steamed bread:80 1±22 ...