With development of capitalism, scientific technology between countories in the world, example, traffic network and comunication network, developed remarkable. And the same time, at the hidden side, a crime became internationalization and it spread and began to show itself gradully. It is well known fact that especially, over latter half of the 20th century, with economic activity became global, wicked crimes by large-scale international systems incresed and stability of politic and economic and social life of countories became to threaten. These facts just were forced to investigated about the way control of crises ought to be between countories and countermeasure between countories againt international and systematic crimes. In recent year, under the slogan "the world is one", the 10th congress was opened on 4・2000 in Wein and the examination about international law againt various wicked international crimes went to ahead activity. In this my report, keeping the flow of these international conferences, I want to examine what inernational criminal law should to be. Contents 1. Internationalization of crime and the trend (1) Cause of crime-internationalozation (2) Trend of international crime in Japan 2. Countermeasures of counties in the world and japan (1) Countermeasures of counties in the world (2) Countermeasures of japan 3. Positive countemeasure to international criminial law (1) Principle of national criminal jurisdiction and the extension (2) Establischment of international criminal court
