This is study on the pioneers of new journlism-Upton Beall Sinclair, L i Pao-chia, and Yang Ch'ing-ch'u. All of them are social historians, and writers of the documentary novels. Their literary works are the true exposure of their contemporary societies. Sinclair, and American journalist and novelist, was involved in the progressive movement in the Progressive Age in the history of the United States. As master of novels of exposure, he exposed the most defective aspects of contemporary American society. From the analytical research of his life-span career as a journalist, novelist, dramatist, essayist, and pamphleteer, we are sure that Sinclair is a Columbus in the history of American literature. And the new contin ent of literature discovered by him is not known until the 1960s as new journalism or non-fiction fiction-- a new genre of literature, a new form of narrative. Li Pao-chia, a Chinese journalist and novelist of late Ch'ing, was involved in the reforming movement in the reforming period in the history of China. He exposed one of most defective aspects of contemporary Chinese society, the old system of civil service examination and bureaucracy. He tried to reproduce the soical macrocosm rather than to explore the human microcosm. Li Pao-chia is the pioneer of new journalism in China-more than a writer of exposing novels. Yang Ch'ing-ch'u, who is best known for his Factory Girls, is a soical historian and writer of documentary news. What he believes in is that literature is the reflection of life, rather than the copy or the criticism of life. His achievement lies in the preservation of the miscellaneous facts of the transitional age of Taiwan. The incidents in his short stories are the facts based on his own observation and experience in the factories. The combination of the facts he collects and the literary skills of his own makes him a typical writer of new journalism in Taiwan--more than a writer for workers or a writer of "native literature"