A hollow fiber membrane filtration device is provided with a hollow fiber membrane module having: a container 1 having a treated water outlet 5 and a concentrated water outlet 8; a hollow fiber membrane 2; an upper end fixing unit 3 for affixing the upper end of the hollow fiber membrane 2; a filtered water chamber 7 formed on the upper side of the upper end fixing unit 3; a water conduit 4 for supplying raw water to the inside of the container 1; and an aeration tube 10 provided on the lower side of the hollow fiber membrane 2. A plurality of spray holes 4a is provided in the side peripheral surfaces of the water conduit 4. A raw water pipe and a gas introducing means are connected to the water conduit 4. A waste water opening 6 is provided in the bottom part of the container 1.
