The world economy changes all the time. And the differing economy perpetually affect the development of a country, as well as the national companies. Therefore, from the recent economy we can tell that oil and U.S dollars are leading the global economy. From several aspects such as the wane of the United Kingdom to the rise of the United States; also the Japanese post-war economic miracle. Now, the Abenomics seems strengthen Japan’s economic power. Above all shoes that the change of economy is now or ever. To move forward under this economic tide, we, national companies have to be prepared and wait till things are ready. Thus, in this thesis we hope to connect the relationship and effect of world economy with U.S dollars by reviewing the oil. Then form a new company’s future trend and embrace success.