A removable orthodontic correction device, comprising: a first correction unit configured to be removably worn on the anterior teeth of a maxillary or mandibular dental arch of a patient, the first correction unit having a plurality of first connection parts formed thereon; a second correction unit configured to be removably worn on the posterior teeth of the maxillary or mandibular dental arch of the patient, the second correction unit having a plurality of second connection parts formed thereon; and a plurality of elastic members coupling the first connection parts to the second connection parts, wherein the elastic force of the elastic members drive the first correction unit to retract toward the second correction unit so that the anterior teeth can also move toward the posterior teeth, thereby closing gaps between the anterior teeth and the posterior teeth formed by premolar extractions; wherein the first connection parts are fixed on a lingual surface of the first correction unit, and the second correction unit includes a first transverse part and a plurality of mounting parts connected to both ends of the first transverse part with the mounting parts at each end joined together and configured to be removably mounted on the posterior teeth, the first transverse part being displaced distally from the lingual surface of the first correction unit, the first transverse part having a curved shape that matches the curvature of the anterior teeth, and the second connection parts of the second correction unit fixed on the first transverse part or the mounting parts; characterized in that an anterior part of the first transverse part is elevated, almost touching the palate, or lowered, almost touching the floor of the mouth so as to increase stability and retention of the second correction unit. a first correction unit configured to be removably worn on the anterior teeth of a maxillary or mandibular dental arch of a patient, the first correction unit having a plurality of first connection parts formed thereon; a second correction unit configured to be removably worn on the posterior teeth of the maxillary or mandibular dental arch of the patient, the second correction unit having a plurality of second connection parts formed thereon; and a plurality of elastic members coupling the first connection parts to the second connection parts, wherein the elastic force of the elastic members drive the first correction unit to retract toward the second correction unit so that the anterior teeth can also move toward the posterior teeth, thereby closing gaps between the anterior teeth and the posterior teeth formed by premolar extractions; wherein the first connection parts are fixed on a lingual surface of the first correction unit, and the second correction unit includes a first transverse part and a plurality of mounting parts connected to both ends of the first transverse part with the mounting parts at each end joined together and configured to be removably mounted on the posterior teeth, the first transverse part being displaced distally from the lingual surface of the first correction unit, the first transverse part having a curved shape that matches the curvature of the anterior teeth, and the second connection parts of the second correction unit fixed on the first transverse part or the mounting parts; characterized in that an anterior part of the first transverse part is elevated, almost touching the palate, or lowered, almost touching the floor of the mouth so as to increase stability and retention of the second correction unit.