The invention discloses a camera supporting device and belongs to the field of camera auxiliary equipment. The camera supporting device comprises a box body. A rotary frame is arranged in the box bodyand comprises a bottom plate and a top plate. Two sets of supporting columns are arranged between the bottom plate and the top plate, and each set comprises two supporting columns. A driving shaft and a driven shaft which are coaxial are arranged on the two opposite inner side walls of the box body. Eccentric swing arms are fixed to the ends, facing the middle of the box body, of the driving shaft and the driving shaft correspondingly. The eccentric directions of the two eccentric swing arms are opposite. A swing rod is connected between the free ends of the two eccentric swing arms. The swing rod is located between the two sets of supporting columns and makes contact with the two sets of supporting columns. The swing rod can slide vertically between the two sets of supporting columns. The midpoint of the swing rod is located on the rotation axis of the rotary frame. A lower gear ring with teeth facing upwards is arranged at the upper end of the top plate. A supporting plate is detachably connected with the upper portion of the top plate. An upper gear ring engaged with the lower gear ring is arranged at the bottom end of the supporting plate. According to the scheme, cameras canbe supported, the angle of the cameras can be subjected to fine rotation adjustment, and application is convenient.