| Abstract | The study, through a survey of cases, examines the features concerning 30 countervailing subsidy cases launched by US in connection with China’s exports over the period from 2006 to 2011. Afterward, this study employs the partial equilibrium theory to deal with the mechanism of trading effects of US anti-subsidy means, tests trade effects by utilizing 23 sampling cases, which have been imposed duties, the annual data concerning the goods with HS codes and six digital tariff No. At length, the study formulates a welfare effect model with the objective of exploring the impacts of countervailing subsidy steps on benefit for importing and exporting countries and the world. The study discovers that US’s countervailing measures versus China’s exporting commodities are marked by a strong investigation density, a high industry concentration, simplex case forms, and a high ultimate verdict rate. These attributes indicate severity in US’s anti-subsidies and trading effects thereof including trade- destroying effects, trade-transferring and following effects. The study also concludes that US’s countervailing measures exerting on China, via comprehensive functions of trading effects, have a negative impact on welfares for America, China, and the globe. |