The invention discloses an energy-saving, emission-reduction and windproof axial-flow induced-draft fan, which comprises a dynamic wind bowl, a motor, a stopper, a motor-casing base, a thermal-isolating mat, a fixed screw, an emission-reduction cover, a motor rotor shaft, upper and lower seal rings, an induced
impeller, a fixed seat and the like, wherein the upper part of the motor rotor shaft is provided with the dynamic wind bowl, and the lower end of the motor rotor shaft is connected with the induced
impeller. The induced-draft
fan in the invention has the advantages that in the weather having force-1 wind or above, the motor is not required to operate, and the induced
impeller is driven to rotate by the rotation of the dynamic wind bowl, so that the
smoke dust in a cooking stove can be emitted to the air; Duo to the action of the emission-reduction cover, the draught
smoke dust particles are blocked in a gas
flue, and the gas can be emitted from all sides so as to prevent the motor from being corroded by overheating gas; and the motor-casing base also has the function of not being interfered by external down-draught wind. The induced-draft
fan in the invention can be widely applied to the
smoke outlets of urban and rural houses with
coal stoves.