An orthognathic correction device, comprising: a first retainer (100, 100') configured to be removably worn on a maxillary dental arch of a patient, having a first left buccal surface with at least one first left connection part (306, 306') fixed thereon, and a first right buccal surface with at least one first right connection part (306, 306') fixed thereon; a second retainer (200, 200') configured to be removably worn on a mandibular dental arch of the patient, having a second left buccal surface with at least one second left connection part (406, 406') fixed thereon, and a second right buccal surface with at least one second right connection part (406, 406') fixed thereon; and at least one elastic member configured to couple the first left connection part (306, 306') to the second left connection part (406, 406'), and at least one elastic member configured to couple the first right connection part (306, 306') to the second right connection part (406, 406'), such that the elastic members drive the second retainer (200, 200') to move relative to the first retainer (100, 100'), thereby adjusting a relative position between a mandible and a maxilla of the patient, when the first retainer (100, 100') and second retainer (200, 200') are retained on the maxillary and mandibular dental arches, respectively; characterized in that the second retainer further has a second occlusal face with at least one spacer formed thereon, and the first retainer further has a first occlusal face with at least one opening formed thereon for exposing at least one maxillary tooth of the maxillary dental arch, and when the first occlusal face contacts the second occlusal face, the spacer abuts the maxillary tooth through the opening to push the maxillary tooth upward. a first retainer (100, 100') configured to be removably worn on a maxillary dental arch of a patient, having a first left buccal surface with at least one first left connection part (306, 306') fixed thereon, and a first right buccal surface with at least one first right connection part (306, 306') fixed thereon; a second retainer (200, 200') configured to be removably worn on a mandibular dental arch of the patient, having a second left buccal surface with at least one second left connection part (406, 406') fixed thereon, and a second right buccal surface with at least one second right connection part (406, 406') fixed thereon; and at least one elastic member configured to couple the first left connection part (306, 306') to the second left connection part (406, 406'), and at least one elastic member configured to couple the first right connection part (306, 306') to the second right connection part (406, 406'), such that the elastic members drive the second retainer (200, 200') to move relative to the first retainer (100, 100'), thereby adjusting a relative position between a mandible and a maxilla of the patient, when the first retainer (100, 100') and second retainer (200, 200') are retained on the maxillary and mandibular dental arches, respectively; characterized in that the second retainer further has a second occlusal face with at least one spacer formed thereon, and the first retainer further has a first occlusal face with at least one opening formed thereon for exposing at least one maxillary tooth of the maxillary dental arch, and when the first occlusal face contacts the second occlusal face, the spacer abuts the maxillary tooth through the opening to push the maxillary tooth upward.