The swimming pool cleaner has a hollow cylinder connected through flexible water pipe to swimming pool pump, combined reed valve and release valve inside water flow channel of the cylinder, inlet underplate connected to the cylinder and to flexible grit collecting plate detachably. Owing to the suction force of swimming pool pump, the inlet underplate and the flexible grit collecting plate close tightly to pool bottom. While the swimming pool cleaner moves at the pool bottom, the high speed water flow entering the narrow channel below disc and that scrubbing disc loosen grit and inhale it into the cleaner. |