Advertisement translation and trademark translation are becoming more and more prevailing and influential under the increasing development of internationalization of business. This paper attempts to analyze the influence of cultural differences on advertisement translation and trademark translation. It finds that advertisement translation and trademark translation are under the impressive influence of the differences between Chinese and Western cultures. This paper aims to stress the cultural differences in advertisement translation and trademark translation and reminds translators of the importance of noticing cultural differences and finding a proper point between foreign cultures and native cultures.