This research is about politeness. The source data of this research is conversation between tourist and guide in Medan. The writer focuses to make data positive and Negative politeness. This research uses qualitative method. This research to find out the types of politeness used and to find out the most dominant types of politeness found in conversation between tourist and guide. The writer need guide improvement of his ability to make a good way in speaking to the tourist, and hope the guide would be more motivated to increase their knowledge about politeness expression and to maximize the positive politeness and minimize the use of negative politeness.