At present, Business English (BE) Writing spreads more widely into the fields of economy and international trade, which becomes a dispensable basic skill for people in the circle of business. Undoubtedly, this arouses the urgent need of teaching reforms in language classes. Students often express their thoughts according to native culture and Pragmatic rules, crossing and colliding with different cultural factors, so misunderstandings and conflicts occur, resulting in varying degrees of communication failures that affect the normal development of international business activities. This paper will aims at analyzing English majors' ICC (International Cultural Communication) knowledge by culture problems in their writing, cultivating students to become more smoothly, and professionals. The author tries to find applicable teaching methods and to meet requirements in National Curriculum for Business English BA Program as well, in order to provide some suggestions to the teaching of BE writing.