Pairing is one of the dance styles. (1) dance works with complete structure and independent theme performed by two actors, such as China's dance "Goodbye! Mom, fly and miss your comrades. Everyone has an independent theme, content and plot (or emotion and artistic conception). Duet in ballet or large-scale dance is an important means to shape the main characters, reveal their inner world and promote the development of the plot, such as the duet of mermaid and hunter in China ballet "The Mermaid"; Three duets by tatiana and onegin in the ballet onegin. Duet requires exquisite structure and vivid image. In addition to being a solo dancer, an actor also requires a high degree of cooperation consciousness and tacit cooperation when performing.