To provide a device for collecting fine particle materials with a simple structure in which the life of a filter is drastically extended, which can highly efficiently collect the fine particle materials, in which the decrease of the capacity is suppressed for a long period of time, in which the collected dust is not re-dispersed, and in which the woking environment in such a dismounting site of construction materials including asbestos, and the like is improved.

The device includes an outer cylinder 2 of which the air discharge opening is opened upstream of the cylinder and the bottom wall is closed, a contactor 5 divided and formed by partition wall 6 for the above and below spaces and a separating wall 7, which leave some space 20 and are installed in the center height part of the outer cylinder, the separating wall hanging downward from the end edge, a sucking pipe 8 and a sprinkler 10 inflowing outer air into the contactor, a vapor-liquid mixer 11 located below them and collecting, and mixing the fine particle materials in the air and an adsorbing liquid, a collecting tank 15 located below it and for the adsorbing liquid containing the fine particle materials, and a demister 19 located upstream of the partition walls and separating a vaper and a liquid. The space communicates with spaces between the demister and the collecting tank.