The United States not only imposes primary sanctions to prevent its entities from trading with the target countries, but also imposes secondary sanctions to prohibit its entities from trading with China once China has normal trade with these target countries. As a result, Chinese entities are unable to use U.S. dollars for settlement, and normal import and export trade is interrupted, and even the overall interests of China are threatened. The U.S. secondary sanctions overstep the theory of national jurisdiction, including territorial jurisdiction, personal jurisdiction, protective jurisdiction, effect jurisdiction and universal jurisdiction, which violates international law seriously. Therefore, China has taken strong countermeasures. The introduction of Rules on Counteracting Unjustified Extra-territorial Application of Foreign Legislation and Other Measures is a great innovation and breakthrough. To a large extent, it has drawn upon the beneficial experience of EU legislation. But the Rules is only a department regulation and its effect is limited. In order to form a systematic and complete system of counteracting laws, it is necessary to formulate a Counteracting Law by the NPC Standing Committee. In addition, in view of the limited scope of application to individuals, the vague words of“measures”in“foreign legislation and other measures”and the low jurisdiction of judging improper extra-territorial application, this paper puts forward relevant suggestions: expanding“Chinese citizens”to“natural persons with habitual residence in China”, refining the foreign improper measures in the context of the above Rules, and improving the rank of the body judging improper extra-territorial application.