The first Sino-US Strategic and Economic Dialogue was held on July 27 and 28, 2009 in Wash-ington. Either before or during the dialogue, PRC and USA attached great importance to it. The former Strategic Dia-logue and the biannual Strategic Economic Dialogue were initiated by the two heads of state in 2005 and 2006 respectively.The dialogue mechanism, upgraded from by ministers from both governments to a strategic and economic dialogue between governmental cabinets, will be held once a year in the future. From the US side,Obama administration shows great inter-ests in the dialogue and places great im-portance on Sino-US relationship, which can be seen from the visits from US senior officials to China in 2009, including US Secretary of State, Secretary of Treasury,Secretary of Commerce and Secretary of Energy.