《红楼梦》后四十回乃高鹗续书说是新红学的主要论断之一，笼罩《红楼梦》研究近百年。历来虽有异见，但从以诠释学眼光对续书说进行系统审视者。本文从各个层面和维度论述高鹗续书说是在20世纪特定文化历史处境中，因为胡适等人诠释《红楼梦》时的特殊生存状态而提出来的，其观点不能成立。作者通过文本细读和理论思辨，梳理出前人较少关注的系列证据作了较充分的论述,并推测《红楼梦》后四十回主体可能为曹雪芹生前原稿被毁后的重写稿。 The argument that the successive forty chapters of A Dream of Red Mansions are completed by Gao E is one of the main conclusions in the late study of this novel, which highlights the study of A Dream of Red Mansions for nearly a hundred years. Although some scholars always dissent, no one has ever examined systematically this argument from the perspective of hermeneutics. All aspects and dimensions considered, this paper holds that as a result of the special living conditions of the interpreters like Hu Shi, the novel was put forward in the specific cultural and historical situation of the twentieth century. The argument is not valid. The author sorts out a series of evidence which are paid less attention by the predecessors and makes a more full exposition through intensive reading and theoretical speculation，and reckons that the main part of the successive forty chapters may be a rewriting edition of Cao Xueqin's manuscript after its destruction.