An electronic cigarette case and a method for charging an electronic cigarette through it are provided. The electronic cigarette case comprises a case body having a charging interface, it further comprises a controller, a trigger switch, a charging detection module and an electronic cigarette charging output module, the trigger switch is set close to the charging interface and will be triggered when the electronic cigarette has been inserted into the charging interface, in case the controller has found out that the trigger switch has been triggered, it will control the electronic cigarette charging output module to enter a charging mode; in case the charging detection module has found out that the electronic cigarette has been fully charged, the controller will control the electronic cigarette charging output module to enter an ultra low standby mode.