Abstract: There are information asymmetry problems in the food industry’s market mechanism. The government makes quality rules of food industry so as to lessen the information asymmetry of the food quality management by using different measures of food security announcement. Based on the information asymmetry theory, this paper analyzes the market malfunction cause by it, expounds the necessity of the food industry ruling carried by the government, and finally discusses the construction of the quality information announcement system of food industry in our country through taking American’s food quality announcement system as a reference