The present invention relates to a splint using a thermoplastic resin material and a method for manufacturing the splint. An object of the present invention is to provide a splint in which a thermoplastic resin material is dipped into warm water several times so as to soften the thermoplastic resin material and the thermoplastic resin material is tightly laid on an affected area so as to enable the splint to have a shape matching a contour of the affected area, thereby enabling the splint to have a structure customized to the affected area. For this purpose, according to the present invention, the splint using a thermoplastic resin material, which fastens an area of a fracture by using a thermoplastic resin material, comprises: a splint formation body which, in a state in which a thermoplastic resin material has been cut so as to have a predetermined size and has been softened through dipping into warm water and cooling several times, is formed in a shape matching to a contour of an affected area by laying the thermoplastic resin material tightly on the affected area of a patient and hardening the thermoplastic resin material a plurality of reinforcing parts which are made of a material identical to that of the thermoplastic resin material, which are formed in a cylindrical shape having a tube structure, and which are softened through dipping into warm water and cooling several times, attached on an outer surface of the splint formation body in a longitudinal direction, and hardened at least one fastening ring which is made of the material identical to that of the thermoplastic resin material, and which is softened through dipping into warm water and cooling several times, attached on the outer surface of the splint formation body in a shape of a ring, and hardened and Velcro tape which is inserted into the fastening ring so as to be coupled to the fastening ring, and which fastens the splint formation body on the affected area.본 발명은 열가소성수지 원단을 이용한 부목 및 이의 제조방법에 관한
