To provide a frame body for a temporary liquid storage tank with which assembly and disassembly are facilitated and the capacity is increased.

First and second square pipes 15, 16 are joined to two side ends of a panel 14 by welding to form each of first to fourth panels 13A to 13D. The panel 14 of each of the first to fourth panels 13A to 13D is elastically deformed and bent into an arc shape. The first and second square pipes 15, 16 are brought into contact with each other, and bolts 17 are inserted into through-holes formed in the first and second square pipes 15, 16. The first and second square pipes 15, 16 are connected to each other by screwing the bolts 17 through nuts 18. The first to fourth panels 13A to 13D, as a whole, form the cylindrical frame body 12.