To provide a splint material which is standardized and compactified in terms of form of finished products and cut into arbitrary lengths and shapes by a consumer side, and a supporter set using this.

The splint material for fixating an affected area includes a core body of a band plate shape and a flat tubular tape body into which the core body is inserted in the longitudinal direction, and a tacky layer which adheres to a surface of the other adhesive body applied to a body or adheres to the body directly is provided on one surface of the tubular tape body. The core body shows elasticity. In addition, the tubular tape body is formed to be elongated, wound in the form of a roll when the core body is not inserted, and configured by having a plurality of bottoms for breaking the inside for every constant length. Preferably, the bottom is constituted by joining the inside of the tape in the form of a dotted line along the width direction. Further, the supporter set includes the splint material and a tape for taping or a poultice as a separate body.