Abstract: The paper aims to ascertain the influence factors of consumers’nutrition cognition and purchase choice of potato staple food products. Based on the data of the consumption guide experience of potato staple food collected from Beijing communities in 2016, the authors deeply discussed the influence of consumer’s individual characteristics, dietary habits, socio- economic status and cognition levels on the acceptance to potato staple food and the willingness to buy and consume. The results showed that: consumers’age, weight, dietary habits, nutritional knowledge levels, food safety risk perception, and price and so on had significant effects on their acceptance of potato staple food, but the influence directions were different, indicating that the degree of awareness and understanding of potato staple food was still limited and there was misunderstood. Therefore, the study proposes to actively carry out various kinds of food nutrition popularization activities, in order to promote the public nutrition cognition level of potato staple food, and initiate more active acceptance and consumption of potato staple food.