The Bi Feng butterfly is an animal belonging to the family Papilionidae in the order Lepidoptera. The wings are triangular, the outer edge of the hind wings is wavy, and the body wings are black; The upper half of the forewings is pale in color, with scattered golden yellow, golden blue, or golden green scales between the wing veins,; There are 6 pink or blue bird shaped spots on the outer edge of the hind wing, and a semi-circular pink spot on the buttock corner; A large blue area is formed in the mid wing region, especially near the leading edge, with a pale color on the reverse side and very distinct markings; The middle chambers of the front and rear wings are closed, and the tail process is also covered with blue and green shiny scales, but only black scales are present at the edges to form a black frame; The color and markings of male and female butterflies are almost the same, and the orange red crescent pattern on the outer edge of the hind wings of female butterflies is slightly more developed than that of male butterflies.