The invention discloses a multifunctional wireless storage device which comprises a CPU (central processing unit) control module, a data storage module, a wireless connecting module, a display module, an operation module and a sensor module, wherein the wireless connecting module is used for wirelessly connecting with an external device, and the display module is used for displaying file information received or transmitted by the wireless connecting module. The sensor module detects operation instructions transmitted by the operation module and transmits the operation instructions to the CPU control module; the CPU control module transmits the operation instructions to the external device by the wireless connecting module or modifies states of files stored in the data storage module through the operation instructions. The device is provided with a display screen or the display module, so that users can visually observe transmitting states and transmitting processes of the files, user interaction can be improved by the aid of the operation module or operation buttons, and the files can be conveniently and directly modified on a wireless storage device by the users without switching to the external device.