The Agreement of Subsidy and Countervailing Measures limit the analysis boundary of de jure specificity to measures in question. However, when measures at issue constitute a part of another generally available and whole subsidy program, the analysis boundary of de jure specificity should be expanded to a broader and overall subsidy program. Because the standard of specificity should form an balance between the trade target of multilateral trading system and the reasonable policy proposals of WTO member, the expanding on the analysis boundary of de jure specificity should refer to the completing contact tests in the U.S and be clearly demonstrated according to the Article 2 (4) of the Agreement of Subsidy And Countervailing Measures.