Abstract: A horse training device is disclosed for encouraging straight line movement in a horse, for use with a bridle and a bit, and a set of reins attachable to the bridle to form a loop, the loop having a first side and a second side. The horse training device includes at least one substantially rigid tubular member, but most preferably includes two tubular members. One tubular member extends at least partially about the first side of the reins and another tubular member extends at least partially about the second side of the reins. The tubular members maintain substantially uniform pressure along a portion of the neck of the horse and restrict movement of the reins. A positioner is located between each tubular member and the bit and positions each tubular member at a predetermined location along the reins so as to prevent undesired travel of the tubular members toward the bit.