The purpose of this study is to find out the characteristic of music classes which the preschooler mostly attend. A multistage sampling method was used to sample out 1500 first grader. A questionnaire was used to ask each sample's mother to recall the music learning history before elementary school. There were 1368 questionnairs returned. The major findings include three parts: First, for all samples, threr were about one third of samples have experience of attending music class. The majority of preschoolers started to learn music from the age of six. Losing interest in music was the major reason of ceasing music learning. Parents' income, parents' education and parents' interest and the living area of children affect music learning rate of preschool children. Second, for those children who have experience of attending music class, the major motivation for those parents who sent their children to learn music was to develop musical interest. The quality of teacher and the distance between music learning center and home were two major considerations for parents to choose the music class. About two third of parents were not willing to buy music instrument for their children's music class, if the continuation of children's music learning is uncertain, or if there were music instrument at home. On average, children went to music class about once a week. Each class section was about 55 minutes. Among five major musical class (Yamaha lesson, Orff lesson, Zuzonchin lesson, other group music lesson and private tutor class), private tutor piano class was the most popular.