The value and contributions of Edgar Allan Poe's literary criticism have not received unanimous recognition from critics as his literary creations have.While most English and American poets are reluctant to publicly acknowledge Poe's influence,his criticism of poetry and poetic concepts have deeply influenced French and Russian Symbolism,Pure Poetry,Aestheticism and even some American poets.Important terms in Poe's fiction criticism such as"single effect","unity of effect"and"undercurrent of meaning"become the focus of later short story theorists.Poe's extreme attention to artistic form and the art object itself heralds the new critical movement of the 20th century.Despite occasionally displaying a certain degree of personal limitations,Poe's literary criticism exerts a broad and profound influence on world literature since the 19th century.