Abstract: Chinese traditional painting has profound traditional cultural details and humanistic spirit, in which the lines, as an important artistic language, combines various philosophical thoughts and the aesthetic taste of the Chinese people. The lines in Chinese traditional painting have strong expressive force to the image of the shape, spirit, temperament, and texture of the object, and show the designer's design thought and spiritual connotation. Based on the research and analysis of the significance, background and theoretical basis of Chinese traditional painting lines in jewelry design, taking lines in ancient Chinese painter Wu Daozi's painting as references, this paper tries to apply the Chinese traditional painting lines into jewelry design. By using methods such as increasing the thickness, bending, twisting etc., in jewelry design to change the volume of lines and their spatial relations, the lines transformed from two-dimensional to three-dimensional structure, which adds a unique oriental charm to the jewelry designed.