Children's voice can be divided into three stages: infancy, early stage, mature stage and late stage. Children are not encouraged to receive vocal music training in infancy. If they are too young and their vocal cords are immature, it will do them harm. When a child is about six to eight years old, the vocal organs are basically fully developed, and the voice is gradually crisp and bright, which is very suitable for children to learn vocal music. Learning vocal music requires a professional teacher. Of course, in addition to the teacher's teaching in class, the companionship of parents after class is also very important. Efficient companionship requires parents not only to stay with their children, but also to devote themselves wholeheartedly to reviewing the learning content with their children and feeling the happiness brought by vocal music.