Curling grass decorative pattern as a typical representative of Chinese traditional decorative pattern, its formation and development has gone through a long process, which has experienced the Chinese traditional decorative pattern transition from the animal pattern to the plant pattern. The basic shape of curling grass decorative pattern is based on the main connection skeleton of the main stem of the “S” shaped curve and branches of the “C”-shaped curve. The decorative pattern characteristics in the rhythm, symmetry and proportion as well as the decorative features in the curling grass decorative pattern determined by its composition form are all emphasized.