Abstract: The jurisdiction of the United States should be fair, unified and predictable, and require equal treatment of the original defendant, as in the judicial process in the United States. The case of Daimler, the Supreme Court of the United States, has been widely discussed in American academic circles. The scope of the case reduced the court long arm jurisdiction, the court did not clarify previously the meaning of the standard which is the essence of "at home"established in the Goodyear case; meanwhile it ignored the American civil jurisdiction of the traditional principles of "equity and justice" in the scope of intent to narrow the general jurisdiction. The contraction tendency of general jurisdiction in American courts lays more emphasis on economic and policy considerations rather than the legal principal.