Although Li He lived only 27 years old, he saved more than 200 poems, which fully showed his genius. The main content of his poems is the depression of talent, and his style is cold and sad. He likes to use words such as "death", "blood", "ghost" and "weeping" to dispel strange images, showing amazing imagination, such as Twenty-three Horses Poems, which shows the ambition and unexpected indignation of talented people through horses. Some poems describe the imaginary fairy world and show his anguish and pursuit. For example, dreaming of the moon palace overlooking the human scene shows the feeling of being dissatisfied with reality but unable to change it, and turns to hate reality and escape from it. Describing people's sufferings is another subject. For example, the song "Old Lady Picking Jade" describes the hard work of the old man picking jade, and it is a masterpiece of blending scenes. Some poems reveal the cruelty and debauchery of the rulers, such as "Journey to the Tiger" alluding to the separatist regime of the buffer region, and "Short Days of Suffering" satirizing the emperor's superstition and seeking immortality. Li He also wrote some poems about love affairs, boudoir thoughts and palace grievances. These poems are characterized by vivid images, beautiful artistic conception, fresh style and sincere feelings. For example, it is very lively to write a young woman waiting for her husband to return in Jiang Lou Qu.
Li He likes to use strange colors in his poems, such as shades, heavy colors, bright colors and variegated colors. For example, he wrote green: cold green, decadent green, silk green, condensed green and static green; Writing red includes: smiling red, cold red, worrying red and old red; Ghost lights write "paint", ghost fires write "green", candlelight writes "cold green", and so on.