Graceful and restrained school is a school of China's Song Ci. Graceful, that is, tactfully implicit. Its main characteristics are that the content focuses on children's amorous feelings, the structure is profound and meticulous, the melody is euphemistic and harmonious, the language is round and beautiful, and there is a kind of femininity. Li Yu is the founder of graceful and restrained school. His ci style mostly describes the magnificent palace life and the love affair between men and women, such as Bodhisattva Man and Ying Huan. His later poems became the king of national subjugation because of the great changes in his life. These sad and tragic late ci poems have far-reaching artistic conception, which laid the foundation of graceful and restrained school and became a great master in the history of ci poems. As for the beauty and harmony of his sentences, it is unprecedented. Such as "Young Beauty" and "Langtaosha Order".