A method for unlocking an electronic cigarette based on face recognition, comprising: when collecting a face image, comparing, the collected face image with a preset face template library by a mobile terminal, and when the comparison is successful, sending an unlocking instruction to the electronic cigarette; and receiving the unlocking instruction by an electronic cigarette, and performing a corresponding unlocking operation according to the unlocking instruction; characterized in that: wherein prior to the mobile terminal collecting a face image, comparing the collected face image with a preset face template library, and when the comparison is successful, sending an unlocking instruction to the electronic cigarette, the method further comprises: when the mobile terminal receives a connection request of the electronic cigarette, establishing a communication connection with the electronic cigarette according to the instruction of the user; when the communication connection is successfully established, sending, by the electronic cigarette, its current status information to the mobile terminal at a predetermined time interval, wherein the status information comprises a locked status and an unlocked status; and receiving, by the mobile terminal, the status information, and performing the step of collecting and comparing a face image in real time when the status information is a locked status. when collecting a face image, comparing, the collected face image with a preset face template library by a mobile terminal, and when the comparison is successful, sending an unlocking instruction to the electronic cigarette; and receiving the unlocking instruction by an electronic cigarette, and performing a corresponding unlocking operation according to the unlocking instruction; characterized in that: wherein prior to the mobile terminal collecting a face image, comparing the collected face image with a preset face template library, and when the comparison is successful, sending an unlocking instruction to the electronic cigarette, the method further comprises: when the mobile terminal receives a connection request of the electronic cigarette, establishing a communication connection with the electronic cigarette according to the instruction of the user; when the communication connection is successfully established, sending, by the electronic cigarette, its current status information to the mobile terminal at a predetermined time interval, wherein the status information comprises a locked status and an unlocked status; and receiving, by the mobile terminal, the status information, and performing the step of collecting and comparing a face image in real time when the status information is a locked status. when the mobile terminal receives a connection request of the electronic cigarette, establishing a communication connection with the electronic cigarette according to the instruction of the user; when the communication connection is successfully established, sending, by the electronic cigarette, its current status information to the mobile terminal at a predetermined time interval, wherein the status information comprises a locked status and an unlocked status; and receiving, by the mobile terminal, the status information, and performing the step of collecting and comparing a face image in real time when the status information is a locked status.