In order to investigate nutritional knowledge, attitude and practice of health food among consumers in Shanghai. 1 007 consumers of health food in 6 emporiums in Shanghai were field surveyed. The results showed that the level of consumers' nutritional knowledge was low. There was positive correlation between education and knowledge of health food ( r =0.999, P <0.001). 50.2% consumers did not know the act of health food, and 71.1% consumers did not recognize the special mark of health food. The major channel from which consumers learned health food was advertisement. 71.9% consumers dubitated advertisement or label, 84.7% consumers purchased health food for themselves or their families, and 46.2% consumers did not think to get the expected effect after taken health food. Consumers' knowledge of health food was few, and it is necessary for giving them education on health food.