The utility model discloses an anti-theft device. The anti-theft device comprises a cabinet body, a sealing door and an anti-theft device body, wherein a storage cavity is formed inside the cabinet body, and the sealing door is used for blocking an opening of the storage cavity. The anti-theft device body comprises an intelligent central controller, an electronic coded lock, a first camera, a second camera, a third camera, a door opening and closing sensor and a standby charging power supply, wherein the intelligent central controller is arranged inside the storage cavity, the electronic coded lock is connected with the intelligent central controller, arranged on the outer wall of the cabinet body and provided with a keyboard, the first camera is arranged on the outer wall of the sealing door and used for shooting a user, the second camera is arranged outside the cabinet body and used for shooting the space where the cabinet body is located, the third camera is arranged in the storage cavity and used for shooting stored objects, and the door opening and closing sensor is used for recording the opening frequency and opening time of the sealing door. The intelligent central controller comprises a data storage unit, a wireless sending and receiving unit, a short message sending and receiving unit and a network data sending and receiving unit, wherein the wireless sending and receiving unit is used for data transmission with the second camera. The anti-theft device is safe and reliable.