An orthodontic brace provided by the present invention can be removably set on a user's dental arch, correcting the dental arch from an original contour to an objective contour. The orthodontic brace includes a plurality of elastic arms that contact with a lingual side or a buccal side of the dental arch, and a corrective contour is constructed by the mutual connection of the elastic arms. The corrective contour fits in at least partial objective contour. At least one elastic arm will be compressed or expanded against by the dental arch, further generating elastic force acting on the dental arch. Wherein, the heights of the elastic arms are not over that of an occlusal surface of the dental arch to prevent saliva from being gathered in the orthodontic brace, which solves other past problems derived from the thickness of the braces at the occlusal surface.
