Abstract: An auxiliary tank for the flush toilet, wherein the one end of the pulling line is connected with a floating ball of the auxiliary tank, then the line is wound from a lower pulley to an upper pulley, and passed through a penetrated hole of a hollow tube, finally the other end of the line is connected with a extension arm in a main tank. When the water level in the main tank is full, the extension arm of the water refilling pipe will be hold by the pulling line which is connected with the floating ball, to limit the refilling water into the main tank from the water refilling pipe but from the auxiliary tank. In the light of above, the flush of the toilet is still able to be operated even at the time of water outage or shutting off the water valve. In addition, the water that refills into the auxiliary tank is the recycling water.

Abstract: An auxiliary tank for the flush toilet, wherein the one end of the pulling line is connected with a floating ball of the auxiliary tank, then the line is wound from a lower pulley to an upper pulley, and passed through a penetrated hole of a hollow tube, finally the other end of the line is connected with a extension arm in a main tank. When the water level in the main tank is full, the extension arm of the water refilling pipe will be hold by the pulling line which is connected with the floating ball, to limit the refilling water into the main tank from the water refilling pipe but from the auxiliary tank. In the light of above, the flush of the toilet is still able to be operated even at the time of water outage or shutting off the water valve. In addition, the water that refills into the auxiliary tank is the recycling water.