Abstract: Objective　To study the effect of Millard (rotating propulsion) and modified Tennison (triangulation) in the treatment of unilateral complete cleft lip and palate and its effect on the shape of maxillofacial. 　Methods　According to the different treatment methods, 52 patients with an unilateral complete cleft lip and palate in our hospital were divided into a Millard treatment group and a modified Tennison treatment group (26 cases). Six months after operation, the clinical efficacy of the two groups was evaluated  before and after the operation. The nasal morphological indexes of the children included Enw (medial canthus distance), BAW (nasal height), BADH (bilateral alar height difference), CHW (oral angle distance), CL (nasal columella height), CW (columella width), NBD (nasal dorsal inclination),  And CD (tilt of nasal columella) were measured by photogrammetry, and the height of the healthy side and the affected side of the child were measured.　Results　In terms of the excellent rate of clinical repair, the Millard group and the modified Tennison group were 69.23% and 88.46%, respectively, and the modified Tennison group was higher than the Millard group (P<0.05). After treatment, the average BAW, CL and CW of the modified Tennison group were higher than those of the control group, and the average BADH and CD of the modified Tennison group were lower than those of the control group (P<0.05), and the difference of lip height between the healthy side and the affected side of the modified Tennison group was smaller than that of the Millard group (P<0.05).　Conclusions　The modified Tennison method is superior to the Millard method in the treatment of the unilateral complete cleft lip and palate. It can maintain the symmetry of nasal and lip morphology, have a better control the maxillofacial morphology of patients, and maintain the morphological mechanism of facial beauty. It is worthy of clinical application.

Key words: unilateral complete cleft lip and palate;　Millard method;　Modified Tennison method, Maxillofacial morphology