With the rapid changes in consumer ideas, people tend to pursue personality and distinctive styles in the aesthetics of fashion accessories, resulting in an increasingly diverse style in the form of accessories. Leather accessory is favored by consumers for its unique material characteristics, and the formal beauty in the design of leather accessories is becoming more and more important, so it can be seen that leather accessories have great development potential in future fashion decorations market. In the design of leather accessories, our country is relatively backward and lacks of design aesthetics, therefore, this paper will explore the aesthetic appreciation in the design of leather accessories based on the form element and composition, and show the harmonious unification of the beauty of material, crafts and art, representing the improvement in the value of leather accessories and the satisfaction of fashion aesthetics.