The present invention discloses a cooperative computing device, wherein a task dispatching module receives a plurality of original image frames and dynamically dispatches the original image frames as a first amount of original image frames and a second amount of original image frames based on a loading result. A first computing module and a second computing module, which are of different types, respectively receive the first amount and the second amount of original image frames and respectively generate a first amount and a second amount of processed image frames. An image sorting module receives the first amount and the second amount of processed image frames, sorts and recovers the processed image frames based on a first timing sequence, and generating the loading result. The present invention also discloses a cooperative computing method which corresponds to the cooperative computing device.