An electronic cigarette controller includes a control chip. The control chip includes: a smoking detecting module used for detecting a capacitance change of an external mouthpiece； a control module used for sending drive and control signals according to the smoking signal, or stopping sending drive and control signals according to the standby signal； a drive module used for receiving the drive and control signals and outputting electric current to drive the electronic cigarette to work； and a tobacco liquid detecting module used for sampling an amount value of a tobacco liquid of the electronic cigarette and determining whether the amount value of the tobacco liquid is less than a preset reference value, if yes, the control module stops sending the drive and control signals. The present disclosure describes an electronic cigarette that can detect an amount of the tobacco liquid.
