Music emotion perception refers to recognize emotions expressed through music. Selected subjects of 3 years old, 4 years old, 5 years old and college students were tested to know their capacity in recognizing the 4 emotional expressions of anger, sadness, tenderness and happiness through being exposed to the Chinese folk and the western classical music. The results showed that: 1) The recognition ability to music emotion improves with the increasing of age whilst 4 years old is a turning point for the development of such perception, The ability of 5years old is close to adult; 2) The recognition to different emotional category in music varies among children,happy is better than others; 3) The recognition ability of music is not affected by music culture.