Abstract: Objective To learn health knowledge level and health behavior among residents after the implement of the /Health Promotion of Healthy Cities Road0 in Suzhou city and to provide evidence for developing health education scientificly and effectively.Methods 3944 persons were selected by systematic sampling in 3 districts.An uniform questio nnaire was used 2 times in Oct,2006 and Sep,2007 respectively and 809 perso ns were selected by the same medthod.Results After health promotion,the residents.health knowledge level and health behavio r showed differences significantly in four respects such as the intake of salt and oil between year of 2006 and 2007(P<01 05).Conclusion The development of the/health promotion0 is effective to improve residents.health knowledge and promote their health behavior.