Abstract: As tariff barriers, the goals of TBT are also to form a control mechanism on price and quantity so as to protect the native economy and limit the imports from outside. TBT, different from tariff barriers, realizes this purpose via establishing technical norms, standards and reasonable assessment procedure. Therefore it has more rationality, complexity, concealment and flexibility, and cannot lead to trade revenge. The article, first displays a general analysis on the forms, features and mechanism of TBT; secondly shows some possible impacts of TBT on the economy of the devel-oping countries, and finally puts forward some corresponding suggestions about policy according to the actual circumstances of China.