”The Reflection of the Moon on the Lake” is the most popular ErHu music made by the folk musician Hua YenJun(A-Bing the Blind). It is based on one topic and developed to many different aspects of presentation. The music of the whole piece goes up and down. The meaningful inspect is also inspiring. A-bing involved the traditional playing skills to his creativity and musical presentation He successfully transfers the old aspect to a new world. This article focuses on A-bing's creation and his music presentaion by the original voice of A-bing himself and the copy writing of Yang YinLiu. At the same time, the author tries to present the original aspect of the piece ”The Reflection of the Moon on the Lake”, and moreover, to help all the players catch the spirits and the key points of the music when they play it. Also, the players can put their own ideas and inspiration to the piece properly.