A supporting structure (10) and a loading-transporting method of a storage and transport container, and the supporting structure (10) comprises a base frame (13), a first frame support (11) and a second frame support (12) both disposed on the base frame (13). The first frame support (11) comprises at least two groups of first supporting beams (111) and first arc-shaped supporting plates (112) disposed on each group of first supporting beams (111). The groups of first supporting beams (111) are parallel and spaced with each other, and each group of first supporting beams (111) comprises at least two first transverse supporting beams (111a, 111b). Each first arc-shaped supporting plate (112) is connected to at least two first transverse supporting beams (111a, 111b) in the same group. The second frame support (12) comprises at least two groups of second supporting beams (121) and second arc-shaped supporting plates (122) disposed on each group of second supporting beams (121). The groups of second supporting beams (121) are parallel and spaced with each other, and each group of second supporting beams (121) comprises at least two second transverse supporting beams (121a) arranged in a transverse direction. Each second arc-shaped supporting plate (122) is connected to at least two second transverse supporting beams (121a) in the same group. The first frame support (11) is higher than the second frame support (12). The supporting structure (10) and the loading-transporting method of the storage and transport container reduce the transportation cost.