Closed type automatic cash register

The utility model relates to the technical field of cash registers, and discloses a closed automatic cash register, which comprises a main body, a printing device, a display, a storage box and four groups of bases, the top of the main body is provided with the printing device and the display, the printing device and the display are respectively connected with the main body, the bottom of the main body is provided with the storage box, and the storage box is connected with the main body. According to the utility model, the device is improved, and the filter assembly is additionally arranged at the vent hole, so that dust is not easy to enter the main body, the damage of the device caused by the dust is reduced, and the service life of the device is effectively prolonged; and a worker can rotate a control button, the control button drives a plug pin to move, then the frame is opened through a hand buckling groove, the worker can rapidly maintain the main body, and the flexibility of the device is effectively im