The setting background of The Adventures of Huckleberry Finn is before the well-known American civil war, at that time, although the slavery had been abolished in the Northern states of America, yet in the Southern parts in which the plantation economy was used as the main and important economic form, the slavery system was considered to be an inevitable and natural feature of social and plays an important role in the economic life. This system allowed the white people to own the Negroes and to treat them as farm animals; therefore, the relationship between the white slave owners and the black slaves was the masters and absolute sufferers. Generally speaking, the salves had always been looked down by the white. In the white’s eyes, the black slaves were uncivilized, inferior and they must obey the masters’ orders completely, otherwise, the slaves would be punished seriously. The white people firmly believe that “give a nigger an inch and he will take an ell” .What’s more, the white didn’t think the black had the rights to love, to learn or other equal rights and protection they deserved. Had been suffering a lot from the racial discrimination, the black slaves even gradually understood that they could do nothing but accept the white masters’ orders and tried their best to adopt their miserable life.