The "clown A" in Hamlet is an extreme marginal character, but a closer look at the text and its presentation on the stage reveals the unique value of this character. It is possible to analyze the optimism and equality that Shakespeare gives to this small character, as well as his inspiration to Hamlet in life and time. The most significant thing is that this character fits the main theme of Hamlet's madness. From the meaning of clown A on the theater stage to make viewers laugh, we can also appreciate the role breaks the "fourth wall" between the stage and the audience, highlighting the superiority of the audience.