To obtain a method and an apparatus for removing a minute particle, in each of which the minute particle of an oil mist or a solvent to be unremoved by a well-known cyclone separator or filter can be removed.

The method for removing the minute particle comprises the steps of: jetting water toward contaminated air to adsorb the minute particle in the air in the jetted water and grow the mass of the adsorbed minute particle to the size enough to be separated centrifugally; introducing the grown particle-containing contaminated air into a primary separation part A based on the cyclone separator to impart high flow velocity to the grown particle-containing contaminated air passing through an air flow passage of the primary separation part and separate the grown particle primarily by strong centrifugal force; introducing the grown particle-removed contaminated air into a succeeding minute particle adsorbing unit from the lower part of an inner cylinder to bring the remaining minute particle into contact with water, enlarge the mass and shape thereof and continuously separate the enlarged particle secondarily by a filter element in the minute particle adsorbing unit.