Device capable of automatically setting shooting mode

The invention discloses a device capable of automatically setting a shooting mode, and aims to solve the problems of complexity in a conventional algorithm and over high CPU (Central Processing Unit) overhead. The device comprises a region partitioning module, a face recognition module, a proportion analyzing module and a shooting mode switching module, wherein the region partitioning module is used for performing matrix partition on an image acquired by a lens to obtain N*M sub-regions; the face recognition module is used for recognizing all faces in the image; the proportion analyzing module is used for performing statistics to obtain the number H of the sub-regions including face information, and calculating a sub-region proportion beta=H/(N*M) including the face information; and the shooting mode switching module is used for switching a shooting mode to a character theme mode when beta is greater than a threshold value gamma, and switching the shooting mode to a non-character theme mode when beta is small