The Cop and the Anthem is one of the representative works of O·Henry written in the 1900’s in America.In this short story,it shows that people have lose their human nature and emotions and suffered a lot in this indifferent and absurd world presented beneath O·Henry’s humorous,ironic,exaggerate pen point.This paper tries to analyze O·Henry’s unique writing style from his black humor and language features,Which can be of some help for understanding of the work. The Cop and the Anthem is one of the representative works of O. Henry written in the 1900’s in America. In short short, it shows that people have lost their human nature and emotions and suffered a lot in this indifferent and absurd world presented beneath. O · Henry’s humorous, ironic, exaggerate pen point.This paper tries to analyze O · Henry’s unique writing style from his black humor and language features, Which can be of some help for understanding of the work.