PURPOSE: A method for manufacturing a teeth aligner is provided to prevent patterns formed on the surface of a teeth model from being transferred. CONSTITUTION: A method for manufacturing a teeth aligner comprises the following steps: a step (S140) of producing a teeth correction model by printing the corrected teeth correction data of a patient through a 3D printer, a step (S170) of applying a polishing agent on the teeth correction model; and a step (S180) of manufacturing the transparent teeth aligner by vacuum pressurizing a transparent synthetic resin plate to the teeth correction model coated with the coating agent. The method prevents patterns formed on the surface of the teeth model from being transferred. [Reference numerals] (S110) Step of obtaining a plaster model by obtaining an impression of patient's teeth; (S120) Step of obtaining data of current patient's teeth by 3D scanning the plaster model; (S130) Step of generating teeth data by processing the current teeth; (S140) Step of producing a teeth correction model by printing the corrected teeth correction data of a patient through a 3D printer; (S150) Mounting the teeth correction model and a transparent synthetic resin plate on a vacuum molding device; (S160) Step of heating the plate; (S170) Step of applying a polishing agent on the teeth correction model; (S180) Step of manufacturing the transparent teeth aligner by vacuum pressurizing a transparent synthetic resin plate to the teeth correction model coated with the coating agent본 발명은 치아 교정기 제조 방법에 관한 것으로, 더욱 상세하게는 치아에 보이지 않게 착용하는 투명 교정기 제조 방법에 관한 것으로 투명 소재를 통한 진공 압착시 3차원 인쇄기를 통해 인쇄된 교정 치아 모형의 매끄럽지 못한 표면이 그대로 전사되는 것을 방지하여 투명 교정기 표면이 매끄럽게 형성되어 투명도를 높임으로써 투명 교정기가 외부에서 시인되는 것을 방지하고, 착용감을 높일 수 있는 치아 교정기 제조 방법에 관한 것이다.