Yang Zhiwei, an elevator designer from the Environmental Protection Association of Nanjing University of Science and Technology, introduced the working principle of the music staircase: it uses a human body sensor as a signal receiving device. When someone passes by, the sensor receives the human body signal, then sends an electronic signal to the sound circuit, and finally the sound is made by a loudspeaker.

Nanjing Metro and volunteers from Jiangsu Youth Environmental Exchange Center made this staircase, mainly to advocate a positive and healthy attitude towards life. Doing more exercise can not only exercise, but also save energy and reduce carbon emissions.