(1) Obvious upper lip arch: Normal people have beautiful upper lip arch lines, but after cleft lip surgery, due to irregular tissue arrangement, they often do not have obvious characteristics of normal lip arch.

(2) lip bead's absence: The middle part of the normal upper lip is obviously protruding, but after cleft lip surgery, due to the poor alignment of the red lip tissue, normal lip bead's absence and sometimes even a small notch appear.

(3) alar collapse: due to the dysplasia of alar cartilage, it is often manifested as alar collapse, accompanied by nasal columella deviation and low nasal tip.

How to correct the secondary deformity of "rabbit lip" after operation: The secondary deformity of "rabbit lip" should be treated by different surgical methods according to different pathological changes and deformity characteristics. Generally speaking, the upper lip arch is not obvious and can be corrected by "Z" plastic surgery; Without lip bead, local tissues can be cut and recombined. It is difficult to correct the nasogastric collapse deformity, and special silicone stent should be implanted to support it if necessary.