A support member for correcting tooth irregularities is provided. The support member includes: a main body that extends in a longitudinal direction and includes a hook portion formed on an end portion thereof; and a plurality of leg portions each of which extends in a radial direction from a central portion of the main body and has a through-hole formed in an end portion thereof, wherein each of the plurality of leg portions is obliquely formed with respect to a line perpendicular to the longitudinal direction of the main body. The support member may be simply fixed to a palatine bone by fixing a fixing screw to the palatine bone without cutting a mucus membrane and may maintain a stable fixed state because the plurality of leg portions are fixed in an area other than a midpalatal suture area.