The utility model provides a separated moxibustion smoke discharge structure which comprises a moxibustion device and a smoke discharge device, wherein the smoke discharge device comprises a cylindrical closed casing, a motor outside the casing and a centrifugal fan in the casing; the centrifugal fan is in dynamic connection with the motor through a rotating shaft; the top plane surface of the casing is provided with an opening and connected with a smoke suction pipe; the smoke suction pipe is connected with the moxibustion device through a communicating pipe; the tubular side surface of the casing is provided with an opening and connected with a smoke exhaust pipe; the smoke exhaust pipe is communicated with the outside. According to the separated moxibustion smoke discharge structure, the motor is located outside the casing and has a good heat dissipation environment, so that the motor cannot be damaged due to over temperature; the motor is separated from a smoke passage, so that oil sludge in smoke cannot seep into the motor to damage the motor, the service life of the motor is greatly prolonged; the centrifugal fan can axially slide on the rotating shaft to adjust the axial interval between the centrifugal fan and the casing, thus avoiding the problem that the motor is damaged as oil sludge stick to the centrifugal fan.