The utility model provides a many suo guangfu of fish belly type support, including an at least photovoltaic support frame, the photovoltaic support frame includes that two parallel intervals set up the support cable that is used for supporting fixed photovoltaic module, locate below should supports cable and are used for the support support two main ropes, the support of cable and locate two landing legs that support cable and main rope both ends, two both ends of supporting the cable are equipped with respectively to be connected in two crossbeams that support between the cable, and these two middle parts of supporting the cable still interval are equipped with to connect in two and support a plurality of horizontal poles between the cable, article two, reciprocal interlocking sets up its whole fish belly type that is that makes to the main rope each other, the point department that the middle part and the main rope of horizontal pole overlap from top to bottom is equipped with the montant of being connected between horizontal pole middle part and main rope. This many suo guangfu of fish belly type support span is big, area is little, and the equipment is simple, and its is with low costs.