Abstract: The public interest,which weighs the advantages and disadvantages comprehensively and takes the rights and interests into full consideration,is the safety valve of avoiding one-sided protection but harming the benefit of the whole industry.Although our country’s anti-dumping legislation has established the public interest principle,there’re flaws in the substantive law and the procedural law.Drawing lessons from the public interest principle of the international anti-dumping legislation,this thesis puts forward some suggestions to perfect the public interest issue in China: first defining the range of interested members of public interest;secondly drawing up regulations about procedure on hearing of the public interest investigation;thirdly integrating reasonable effective system of limitation of time;and sub-joining lesser duty rule.