As for Sea Wolf, though it grasped eyes in the market immediately, it was not well accepted by some critics。 Generally, researchers study it from the perspective of Ecocriticism, Nietzschean philosophy, sex and gender, and Naturalism。 For the perspective of Ecocriticism, for instance, Bert Bender acknowledged London’s hidden ecological thought of The Sea Wolf。 Through analyzing characters in Sea Wolf, Bender shows readers a picture of people live together discordantly。 He hopes that human can realize the importance of relation between man and environment (2004)。 For the angle of Nietzschean philosophy, Gao H。 A, through the article “Superman or a Louse”, shows Nietzschean philosophy of Sea Wolf。 In the article, the author finds Nietzsche’s figure in Sea Wolf and reveal superman ideology（2002)。 Nietzsche’s philosophy superman is the prototype of Captain Larsen。 And sex and gender is a controversial theme of this novel。 In this novel, there is only a woman whose name is Maud。 She is also the survival with Van Weyden at the end of the story。 In the paper Sex, Gender, and Death in "The Sea-Wolf", Vinnie stated that Van Weyden’s action of murdering Maud is to prove his masculinity (2003)。 For Naturalism, Eric publishes a paper to study the naturalism of the captain Larsen。 His death can be pided into five kinds, and they are likely to complement each other。 Eric sheds new light on Sea Wolf from the aspect of mankind and nature (2010)。