Roofing fixing part used for roof photovoltaic power generation system

The utility model discloses a roofing fixing part used for a roof photovoltaic power generation system, the roofing fixing part comprising a connecting part, a support part disposed at the top of the connecting part, and a fixing part disposed at the bottom of the connecting part; the two sides of the support part are symmetrically provided with a clamp groove, the middle part of the support part is provided with a screw hole; a through hole is disposed on the fixing part, the roofing fixing part is an integrated structure. The roofing fixing part in the utility model can be directly laid on the roof without keel being laid beforehand on the roof, not only saving materials, saving time, and reducing cost, but also greatly facilitating installation of solar cell modules, and realizing regularity and fast installation of roof photovoltaic power generation system.