A mosquito net supporting frame structure and mosquito net arrangement is disclosed to include a mosquito net having a polygonal top and a plurality of peripheral panels extended around the border of the polygonal top, and a mosquito net supporting frame structure, which includes a plurality of combination frame bars respectively inserted into a respective top sleeve at each peripheral panel of the mosquito net, a plurality of hanging wires coupled to the combination frame bars and extended out of respective top openings of the sleeves of the peripheral panels of the mosquito net, and a plurality of hooks fastened to an overhead place for the hanging of the hanging wires.