Objective To understand the knowledge and attitude of medical staffs on foodborne diseases in Guangdong province,and to assess the effectiveness of training.Methods The knowledge and attitude of foodborne diseases in medical staffs of ten hospitals in eight cities of Guangdong province were investigated by questionnaires.Results The average score of medical staffs before training was 20.31±3.06 for the knowledge and 7.90±1.47 for the attitude on foodborne diseases,while that after training was 23.08±2.65 and 8.94±0.99 respectively,with significant difference before and after training.Conclusion Medical staffs play an important role in the surveillance of foodborne diseases;their cognitive level on foodborne diseases should be improved;carrying out training on their knowledge and attitude of foodborne disease can obtain good effectiveness.