Abstract: Desert island fictions usually have a typical theme, mainly following the plot mode that a person suffers shipwreck, goes through many dangers on a desert island, and returns to society finally. The Adventures of Robinson Crusoe, Lord of the Flies, The Island of the Day Before, these three representative works apparently show the changes of philosophical connotations of desert island fictions in terms of space meaning, desire representation and ultimate orientation. While the confident spirit in The Adventures of Robinson Crusoe is destroyed in Lord of the Flies, it is rebuilt reflectively and gently in The Island of the Day Before, which reveals a turn from absolute to relative, unitary to multivariate, and “reality” to “retreat”.