The invention belongs to the relevant technical field of centrifugal casting fluid morphology observation, and discloses a three-dimensional photographing system and method for the mold filling fluidmorphology of centrifugal casting physical simulation. The photographing system comprises a centrifugal casting physical simulation platform, a binocular stereo image photographing component and an image processor, wherein the centrifugal casting physical simulation platform is used for simulating the flowing of the mold filling fluid during centrifugal casting; the binocular stereo image photographing component is connected to the image processor; the image processor is used for carrying out three-dimensional reconstruction according to an image from the binocular stereo image photographing component to obtain the three-dimensional motion morphology characteristics of the mold filling fluid at different moments; the binocular stereo image photographing component comprises two high-speed cameras arranged at intervals; and the two high-speed cameras photograph the mold filling fluid by an intersectant optical axis form. The photographing system has the advantages of simple structure, stability in operation, convenience in fluid motion morphology collection and wide operation adaptation.