ABSTRACT:The essay mainly deals with the subject of anti-dumping system. It reviews that there remain ambiguities in the WTO anti-dumping law and this law still leaves room for significant differences in approach to the enforcement of anti-dumping law. The essay takes WTO Dispute Settlement System as a procedural adjustment to the default of the anti-dumping law, and it also believes that some substantive amendments should be done in the future in order to perfect this system. KEYWORD: anti-dumping, WTO Dispute Settlement System, procedural law, substantive law