The invention discloses a hairbrush fixing structure of a bottle washing machine. The hairbrush fixing structure comprises an upper shell, a lower shell, a water distribution disk, water distribution rods, a fastening bolt and a water pipe joint, wherein the upper shell is made from a stainless steel material; the lower side of the upper shell is connected to the lower shell by the bolt; the upper shell and the lower shell are collectively referred to as spraying devices; the circular water distribution disk is arranged in the middle positions of the spraying devices by welding; the plurality of rectangular water distribution rods are uniformly arranged on the periphery of the water distribution disk; the fastening bolt is arranged at the upper side of the water distribution disk; the water pipe joint is arranged at the upper side of the fastening bolt; and a plurality of connecting holes are uniformly distributed on each water distribution rod and are connected to hairbrushes through buckles. The hairbrush fixing structure has the beneficial effects that the hairbrushes can be effectively fixed on the water distribution rods through the upper shell, the lower shell and the fastening bolt and is prevented from excessively shaking during cleaning to cause dropping of the hairbrushes.