Modern dance originated in Germany, but it flourished in America. At the beginning of the 20th century, influenced by American dancers isadora duncan and Ruth Saint Denis, the movements of modern dance had a basic blueprint and expression. Duncan's creative inspiration comes from ancient Greek culture. Because she advocates the spirit of freedom and nature, this has become her expression of dance life and created her own action form and starting point. Because of her opposition to imitation, she asked students to create their own movements and find their own dances in teaching, so that Duncan's creation did not survive. However, her creative spirit, theoretical basis and new style of dance teaching have greatly influenced American education, so she is called "the mother of modernity". In addition to emphasizing nature in action, Dennis also integrated oriental dance into his creation, implying the mixed form of eastern and western dances, enriching the movements of American dance, shaping a new image of modern dance, becoming a treasure house of action resources for American modern dancers in the later period, and cultivating contemporary American dance masters such as Han, Charles Whiteman. However, in modern dance techniques and choreography, Martha Graham is the most contribution. She accepted Duncan's modern dance theory and all the movements created by Dennis, inherited the American nature, and established the movement principles of modern dance, so that the ideological system and technical norms of modern dance were systematically sorted out during this period. Next, many dancers were deeply influenced by it. Combining what they have learned with their own ideas and styles, they have made.

Since the development of modern dance, it has been constantly trying to find new forms of expression, so the demand and response to movements are very unique, and it is a dance with both artistic and educational functions.

1. The essence of action: it is an avant-garde art and a dance that can be tried. There is no complicated plot, scenery or music, but you can use irregular or dancer's own music or voice.

2. Action characteristics: barefoot, without national color, but with the characteristics of freedom, openness, adventure and innovation in the United States. The abstract consciousness of action comes from the specific arrangement of dancers, that is, everyone develops according to their own principles and changes and innovates with the development of action.

3. Performance of action: based on the whole body, from the inside out, with the development of mind and emotion, it is a kind of self-expression, and the body posture and lines develop at will without any restrictions. Sometimes it is accompanied by a variety of media (such as slides, movies, carols, etc.), which are felt and interpreted by the audience themselves in the dance.

4. Action skills: Let the dancers pursue "self" and "freedom" with more body movements, without emphasizing technology, only emphasizing the expressive meaning of the movements.

5. Use of the center of gravity: make full use of gravity and ground reaction to make the use of strength produce new fulcrums, such as the dance steps of falling or returning posture, the tension and relaxation of the trunk, and the contraction and extension between breaths. ;