Politeness is one of the most important instruments in maintaining personal relationship in society. As a potential agreement, it has the power of restricting social members’ speech acts. Virtually speaking, the two Politeness Principles are the same; however, due to the influence of different factors such as history, culture, society, and context, this two principles still has got something different. Based on the Chinese Politeness Principles, this paper tries to make a contrast between these two Politeness Principles, so as to find the differences, thus, we can communicate with foreigners more easily.