The design of lip type includes: the design of lip type must consider the individual's lip type, face type, nose type, eye type, age and skin color. When designing the lip shape, we should pay attention to the proportional relationship between the top and bottom, but whether it is outward expansion or inward expansion, it should be carried out near the red line of the original lip shape, and it should not exceed 1.5mm, so as not to affect the appearance. People with wide face and big chin should design full and round lips. People with narrow faces should design a "cherry mouth" lip shape. Customers with drooping corners of their mouths feel old. When designing the lip shape, the lower lip line should extend to the corner of the mouth, and the length of the upper lip should be slightly contracted, so that the corner of the mouth will feel improved. Pay attention to the overall shape adjustment, in order to make a lip shape suitable for all kinds of faces.