He is a representative poet in the transitional period from the middle Tang Dynasty to the late Tang Dynasty. He was born in an era when great poets such as Han, Liu, Yuan and Bai competed for glory. However, later poet Li He was able to create a unique family. The central content of his poems is to tell the grief and indignation of talented people, and there is a restrained and open atmosphere in his poems. With his unique experience and feelings, he painted his poems with a layer of melancholy color of Leng Yan. Wang Siren's Preface to the Interpretation of Long Valley Poems said, "Because of his sadness, it has become a subtle tone, and he likes to use ghost words, weeping words, dead words and bloody words." He inherited the romantic spirit and artistic technique of The Songs of the South, and borrowed from Yuefu, small poems, Bao Zhao's poems and Li Bai's poems in the Han, Wei and Six Dynasties. He created a mysterious and colorful artistic realm with his rich imagination and novel language. A Qing and Wang Qi thought that Li He's poems "originated in Chu Sao, and gradually spread to the ancient Yuefu of Han and Wei Dynasties". Unfortunately, he was short-lived, so the number of poems left behind was limited, and the content naturally appeared thin. Moreover, he deliberately created many strange epigrams, but at the same time it was inevitable that they were obscure and over-polished.