To provide an air sterilizing and purifying facility in which sterilization and dust collecting function are conducted at the same time by a combination of plasma and corona discharge, in which superoxide anion radical and minus ion having bactericidal function are released in a room by a combination of new plasma and corona discharge on the blast side to inactivate floating virus and various bacteria, and in which dust is precipitated by an electric neutralizing action to improve environment in a room.

In an electric dust collecting mechanism, electrons by corona discharge are utilized for a charge action, sterilization and dust collection are conducted at the same time in a series of flow by incorporating a plasma generating body generating the plasma region in the same mechanism, and further by placing an electron irradiation portion by corona discharge, the plasma generating body on the blast side, a superoxide anion radical and a minus ion (electron) are contained in the air purified by electric dust collection, and the air in a room is actively purified by bactericidal force and electric neutralizing force.