The invention discloses a cloud-terminal video decoding BOX, which comprises a shell and a core circuit which is arranged inside the shell, wherein the core circuit comprises a processor, and a memory, a memory secure digital (SD) card, an Ethernet controller, a general processing unit (GPU) graph decipher, a two-dimensional (2D) graph accelerator and an audio coder / decoder, which are connected with the processor, and the shell is provided with a display device interface, a mouse interface, a keyboard interface, a microphone interface, a loudspeaker interface and an Ethernet interface. The auxiliary devices such as a display device, a keyboard and a mouse are accessed to the internet, the internet is connected with a cloud computing server, the cloud computing server transmits the video data in a stream media form to the cloud-terminal video decoding BOX to realize the decoding and the playing of the video on the BOX, so that the problems of the operation decoding and playing of a video file by utilizing the cloud computing server can be solved, the performance of the CUP of the cloud computing server and the network quality can be improved, and the video with identical quality with that of the personal computer (PC) can be experienced by users.