Since ancient times, countless scholars had used poems to praise friendship and express their longing for their friends. In literature, poetry is a very important art form. It uses rhythm, rhythm, and images to express emotions and thoughts. In poetry, friendship is described as a sincere, pure, and profound emotion. Many poets use poetry to express their longing for their friends, as well as their appreciation and gratitude for their friendship. In ancient times, many poets used poems to praise friendship. For example, Bai Juyi, a poet of the Tang Dynasty, wrote in his poem "Farewell to the Ancient Grass":"The grass on the plain withers and thrives every year. The wildfire never ends, and the spring breeze blows, it grows again. The far-off fragrance encroaches on the ancient road, the clear green connecting the deserted city. And send the prince to the lush garden to bid farewell." This poem expressed the poet's longing for his friends and the deep friendship between them. In modern literature, there are many poets who use poems to praise friendship. For example, the American poet De Botton wrote in "Song of Friendship":"Oh how strong and true the friendship that we share!" A love that lasts forever A bond of trust and loyalty A love that is a pure delight!”This poem expressed his longing for his friend and the deep friendship between them. Poetry was also an important way to express friendship and feelings in works of art. For example, in the famous modern poet Hai Zi's " Facing the Sea, Spring Flowers Blossoms ", he wrote," The bright moon is born on the sea, and the horizon is at this time. Lovers complain that in the distant night, I miss you at dusk. When the candle is extinguished, the light fills my clothes and I feel the dew dripping. I can't bear to give you my hands full." This poem expressed the poet's longing for his friends and the deep friendship between them.