Like anti-dumping, countervailing and safeguards system, trade barrier investigation mechanism is an effective instrument of trade remedy which retorts trade barriers of other countries.

• 对外贸易壁垒调查制度是一国反击外国(地区)政府设置的贸易壁垒的有效贸易政策工具，它与反倾销、反补贴、保障措施制度并称为四大贸易救济工具。