Limb fixing device

The utility model relates to the technical field of medical instruments, in particular to a limb fixing device. The limb fixing device comprises a restraint strap body, the restraint strap body can wrap the limb of a patient in a winding mode, the restraint strap body has the width in the length direction of the limb of the patient, the restraint strap body comprises a first strap body, a second strap body and a connecting piece, and the first strap body and the second strap body are arranged side by side in the width direction of the restraint strap body; one end of the connecting piece is connected with the first belt body, and the other end of the connecting piece is connected with the second belt body; the connecting piece can stretch out and draw back, and the width of the restraint strap body can be adjusted by adjusting the length of the connecting piece. When the elbow joint of the upper limb of a patient is fixed, the width of the restraint strap body is adjusted, the restraint strap body can complet