PROBLEM TO BE SOLVED: To prevent invasion of smell and air containing various germs into a sterilized water generator.SOLUTION: A sterilized water generator 8 producing sterilized water by mixing a solution as a source of the sterilized water with water comprises: a first sterilized water tank 30 and a second sterilized water tank 33 where the solution and water are mixed a tap water tank 13 including a water storage part 14 for measuring water supplied to the first sterilized water tank 30 and the second sterilized water tank 33 and a drain pocket 15 receiving water overflowing from the water storage part 14 a first discharge passage 28 and a second discharge passage 29 connected to the drain pocket 15 of the tap water tank 13 to discharge the water overflowing from the water storage part 14 into the drain pocket 15 and a trap 200 provided between the first discharge passage 28 and the second discharge passage 29 to close the first discharge passage 28 and the second discharge passage 29 using the sterilized water produced in the first sterilized water tank 30 and the second sterilized water tank 33.SELECTED DRAWING: Figure 4