The holistic and deep study of drug trafficking has important meanings for improving the scientific nature of our policies for preventing drug crime and contributing Chinese wisdom to the resolution of drug problems worldwide. However, relative studies of us mostly focus on the domestic drug trafficking problems, at the meantime, they limit their main areas of research into the history, geography and social transformation. Therefore, the relative studies of us lack the depth and breadth compared with the foreign researches. By observing the foreign governance for drug trafficking, we can know that the political reasons why the drug trafficking is born are probably the corruption of authorities, the improper political strategies of government, the inability of managing for specific territories and the intentional promotion by illegal regimes. And in the economic area, the causes may be the massive unemployment resulted by the industrialization and urbanization, the allure of high profits created by a large demand of drugs and the well-developed methods to avoid the risks of trafficking, and the difficulties of punishment influenced by the economic globalization. On the basis of them, we should deal with the drug trafficking by punishing corruption severely, making proper policies for drugs, strengthening the regional control, providing the insurance of unemployment, cutting the acquaintance network of drug distribution and selling, and improving the international corroboration of criminal justice.