M-lip is a popular lip type, and the shape of the lip is improved by surgery. Its characteristic is that the central part of the upper and lower lips presents an obvious M-shaped arc, which makes the lips look more stereoscopic and full. This lip shape is not only suitable for oval face, oval face, heart-shaped face face and diamond face, but also can improve the overall proportion and contour of the face. M lip surgery can be achieved by injecting filler or surgical repair, and the postoperative effect is natural and lasting. It can enhance the sexiness and fullness of lips and make the face more attractive and charming. The choice of any form of plastic surgery should be carefully considered and the opinions of professional doctors should be consulted to ensure safe and satisfactory results.