The present disclosure discloses an electronic cigarette controller including 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 can detect an amount of the tobacco liquid.
