Mounting bracket and photovoltaic system

The utility model belongs to the technical field of photovoltaic systems, and discloses a mounting bracket and a photovoltaic system. The mounting bracket is used for mounting the photovoltaic module, the photovoltaic module comprises a frame and a photovoltaic cell piece, the frame is mounted to the side edge of the photovoltaic cell piece in a first direction, and a through groove extending in the first direction is formed in the frame; the installation support comprises a supporting piece, a first fixing piece, a clamping protrusion and a clamping groove. The supporting pieces are used for supporting two adjacent frames in the second direction, the supporting pieces are fixedly arranged, and the second direction is perpendicular to the first direction; the first fixing piece is used for fixedly connecting the frame and the supporting piece; one of the first fixing piece and the frame is provided with a clamping protrusion, the other one of the first fixing piece and the frame is provided with a clamping gr