Objective To analyze the effect of bracketless invisible appliance on dental aesthetic effect in patients with skeletal class Ⅱ malocclusion. Methods A total of 300 patients with skeletal class Ⅱ malocclusion admitted to High-tech Park Modern Dental Clinic from January 2020 to January 2024 were selected as the research subjects, and they were randomly divided into control group (n =150) and observation group (n =150). The control group was treated with straight wire arch fixed appliance, and the observation group was treated with bracketless invisible appliance. The orthodontic effect, dental aesthetic effect and molar displacement were compared between the two groups. Results The scores of each dimension of PAR in the observation group were lower than those in the control group, and the differences were statistically significant (P <0.05). After treatment, the scores of appearance, marginal aesthetics and surface texture in the observation group were higher than those in the control group, and the differences were statistically significant (P <0.05). After treatment, the expression rate of molar displacement, molar distal displacement and movement speed in the observation group were better than those in the control group, and the differences were statistically significant (P <0.05). Conclusion The treatment of bracketless invisible appliance for patients with skeletal class Ⅱ malocclusion can not only improve the orthodontic effect, effectively improve the displacement of molars, but also improve the aesthetic effect, and the clinical application value is definite.