Abstract: Objective To investigate the status of nutrition knowledge,attitude and practice(KAP) among urban office workers in Shanghai city.Methods A questionnaire was designed and its reliability and validity were tested.Office workers randomly sampled from four commercial districts in Shanghai were invited to finish the questionnaire.Results Among the 740 office workers,48.2%(357) had a medium or poor score on nutrition knowledge; 93.1%(689) had a good or excellent score on nutrition attitude.The women had a higher average score than the men for KAP(P < 0.05).The workers aged from 30 to 49 years had a higher average score than workers aged from 20 to 29 years for knowledge and practice(P < 0.05).The workers with master degree or with an average disposable monthly income of more than 5 000 RMB yuan had the highest score than other workers for nutrition knowledge and practice.Conclusion The urban office workers in Shanghai have good nutrition attitude and practice but inadequate nutrition knowledge.Gender,age,education,and income affect significantly on nutrition knowledge and practice,but not on nutrition attitude.