Women's magazines in modern China, a side-product of the emerging free press in the first decades of the twentieth century, provide invaluable materials for the study of Chinese women in modern era. However, their value is not a reflection of the extent of historical content in these magazines themselves, but due to the paucity of other historical sources on Chinese women. Thus, it is not surprising that the Ladies' Journal (Funu zazhi), published by Shanghai Commercial Press from 1915 to 1931, has become a critical source for modern Chinese women's history, especially for the May Fourth Movement era. It is widely accepted that the Ladies' Journal reached its apogee during the period of May Fourth Movement, which was used to validate the value this magazine as a historical source for the study of the women's liberation movement during this era. However, this assumption overlooks the two critical points: first, that the social background of a journal (such as readership or authors) can change, and, second, that any historical conclusions drawn from specific sources need to be verified by the social background of the sources themselves. Since each historical source reflects only a fraction of a whole society, the changes portrayed in one specific source cannot be extrapolated to explain the “zeitgeist” without verifying of the continuity of its social background. This paper examines the history of the Ladies' Journal over its seventeen-year existence through its authorship, readership, publisher's attitudes, and circulation. This allows us to determine more precisely the actual value of the Ladies' Journal for the study of the women's liberation movement during the May Fourth Movement era.