This thesis is the study of the impacts of racism on Roxana and her son in Mark Twain's Pudd'nhead Wilson. The racism can be found in every place in the world. Although people say that we should respect other person fairly and treat them nicely, people still sometimes feel that a particular race is much better than any other. This kind of attitude will cause bad effects on certain people's lives. Due to this fact, the thesis writer is curious to know whether there are any impacts of racism on the lives of Mark Twain's Pudd'nhead Wilson protagonists, Roxana and her son, and if there are, the thesis writer also wants to know what the impacts are. 'The purpose of this thesis is to show that there are certain impacts of racism on Roxana and her s o n that bring both of them to sorrow and destruction. To achieve her goal, the thesis writer will use literary approach such as theory of characterization, theory of conflict, theory of setting. The analysis reveals the impacts of racism on Roxana and her son. It is proved that actually the problem about racism can only be solved if people can accept the reality of who they are and can respect each other.