<;P>;PROBLEM TO BE SOLVED: To provide a humidifier device capable of stabilizing sprouting and seedling without applying damage when providing moisture to seeds. <;P>;SOLUTION: In the humidifier device 1, water 11 is poured into a thermal insulation container 2 and moisture is provided to objects S to be humidified such as seeds housed in the thermal insulation container an upper space part 7 and a lower space part 8 are formed by a partitioning material 10 inside of the thermal insulation container 2. The objects to be humidified are housed in the upper space part 7, and the water 11 is stored in the lower space part 8. It is provided with a humidification filter 12 vaporizing the water stored in the lower space part 8, a venting passage 9 communicating the lower space part 8 with the upper space part 7, and a fan 6 to be used as a circulator. Humidification air containing the vaporized moisture is circulated by the fan 6 through a partition material 10, the venting passage 9, and the humidification filter 12. <;P>;COPYRIGHT: (C)2009,JPO&INPIT