Abstract: Provided is a device for correcting hallux valgus using a shape memory alloy, which can be easily worn and exert a large and adequate correcting force to thereby correct hallux valgus or hallux varus. The device for correcting hallux valgus comprises a correcting plate formed of a shape memory alloy and attachment members for attaching the same, said attachment members each being formed of an elastic fabric bag, wherein said correcting plate is attached, from the inward direction of the hallux, to the foot body and to the hallux body respectively by the first attachment member and the second attachment member, and an opening is formed in the part of the correcting plate being in contact with the first metatarsophangeal joint so that the hallux is corrected by positioning outward using the periphery of the opening as a supporting point.