This paper analyzes several forms of the mixed beats in the Dong Pipa song with the analysis of rhythm form, including the different types and styles of songs and the accompaniment of music. The author believes that the performance of the form expresses the rhythm of the song content, the meaning the unique function of expression, and the inherent needs of music style. Besides that the mix time for the Dong Pipa song is of the important enlightenment significance for our music creators to re-examine the folk music heritage, including th...