Singing is based on human body as instruments of a music forms, it can't be in a completely natural state, the more impossible in a tense state, it is a positive and relaxed concur. To get a good singing technology, more perfect performance of vocal music, we are learning to sing it to pay attention to cultivating their own positive and relaxed. This paper for singing in a positive and relaxed and oppose already a dialectical unity, in combination with the learning issues are described, which can be more accurate performance songs inner emotions, improve the level of vocal music.