The traditional classification method of emotional features in vocal music performance of minority nationalities lasts a long time, so the effect of emotional features in vocal music performance of minority nationalities decreases accordingly. Therefore, this paper puts forward the classification method of emotional characteristics of minority vocal music singing under the multicultural value. Iclassify the emotional features of minority vocal music quickly, the emotional features of minority vocal music should be extracted and preprocessed. Simulation results show that the new method has shorter time and better classification effect, so it is worth popularizing.