The development of Shakespeare’s dramatic literature is a turning point in the development of the history of English dramatic literature and an important period in the development of the English language. Based on a selfconstructed corpus of Shakespeare’s dramatic literary works, this paper combines BERT and attention mechanism to establish a SMLCL model for literary feature extraction of Shakespeare’s drama. Based on the literary feature extraction results of this model, the lexical feature situation of Shakespeare’s dramatic literary works is explored. Then a multiple linear regression model was constructed with Shakespeare’s dramatic literature features as the independent variable and the level of British dramatic literature development as the dependent variable, which was used to explore the influence of Shakespeare’s dramatic literature on British dramatic literature. It was found that the F@6 index of the SMLCL model was 67.62%, which was 3.31 percentage points higher than that of the MIEnhance-KPE model. The lexical densities of the observed and reference pools of Shakespeare’s dramatic literature were 76.02% and 77.97%, respectively, and there was a significant difference in the use of lexical densities (LLR=-84.72***, P<0.01). There is a significant positive effect of Shakespeare's dramatic literary features on the level of development of English dramatic literature. Relying on Shakespeare's dramatic literary features, it makes the lexical transformations in British dramatic literature more flexible, the sentence expressions more varied, and the use of foreign words and hyphenation, all of which make the expressions of British dramatic literature more figurative and compatible.
