Abstract: The present disclosure relates to an electronic cigarette and an atomizer device and an atomizer assembly thereof. The atomizer assembly includes a connection tube and an inner core assembly arranged in the connection tube. The connection tube defines a liquid inlet hole allowing liquid solution to flow into the connection tube, and the inner core assembly comprises a heater for heating and vaporizing the liquid solution flowed into the connection tube. The connection tube includes a first connection member and a second connection member detachably connected to the first connection member; and the first connection member and the second connection member defines a receiving space in which the inner core assembly is detachably arranged.