The present invention relates to an orthodontic plate fixated on ramus, which arranges a structure for being connected to an orthodontic device installed on the lower teeth at a plate for correction of the lower jawbone, thereby enhancing convenience in installing surgical tools. The orthodontic plate fixated on the ramus according to the present invention comprises: a fixation unit implanted at retromolar fossa portion arranged at portion near molars among the lower jawbone within an oral cavity; a hook unit connected to the fixation unit and dynamically connected to a correction device installed on the lower teeth for the correction of the lower jawbone; and a connection unit connecting the fixation unit to the hook unit and protruding and obliquely formed from a plane, formed by a front end surface including the fixation unit, to a plane, formed by a front end surface including the hook unit for positioning the hook unit without interfering in the molars.
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