The invention relates to the technical field of medical instruments, in particular to a fixator for treating children with torticollis. It includes a base fabric, a first base plate, a second base plate, a clavicle fixer, an adjustment rope, an air bag and an air pump, one side of the base fabric is connected to one side of the first base plate, and the side of the first base plate away from the base fabric passes through The rotating shaft is rotatably connected to the second bottom plate; a first locking member capable of fixing the first bottom plate and the second bottom plate on the same plane is provided between the first bottom plate and the second bottom plate; the first bottom plate is installed along the side close to the second bottom plate There is a slide rail, and the slide rail is slidingly connected with one end of the clavicle fixing part; the other end of the clavicle fixing part is connected with one end of the adjustment rope, and the other end of the adjustment rope is connected with the base cloth, and the two adjustment ropes are arranged crosswise; the second base plate is provided with airbags and A pump connected to the air bag. The invention can fix the head and fix the collarbone, so that the curative effect of treating torticollis in children is good.