Abstract: The action effect of concentrated nutritional agents on the production performance of laying hens was determined by adding feed with concentrated nutritional agents. Results showed that after concentrated nutritional agents were added into drinking water of egg farm for one week, the egg production of laying hens was increased by 5%-10% averagely; the antiviral ability of laying hens was also improved by concentrated nutritional agents; the quality of egg was significantly improved by concentrated nutritional agents, while the number of broken eggs and soft-shelled eggs were significantly decreased.