Mark Twain was an important figure in the history of American literature and was widely regarded as the pioneer of modern fiction. His masterpieces include The Adventures of Tom sawyer and The Adventures of Huckleberry Finn. Although Mark Twain's literary achievements were not the highest, his writing style and ideas had a profound impact on modern literature. He revealed some contradictions and problems in American society, such as poverty, racial discrimination, and the lack of a democratic system. His novels often used humor and irony to portray the character and fate of the characters, which was very popular among readers. In addition, Mark Twain was also an active speaker who often made speeches and comments on literature and social phenomena. His influence was far-reaching, and he was widely recognized and praised not only in the United States but also around the world. Therefore, it can be said that although Mark Twain's literary achievements were not the highest, he made an important contribution to the development of American literature and modern literature and was considered the true father of literature.