To provide a portable multifunctional tank which reduces an incidental work burden such as assembly and fixation, and facilitates transportation and storage.SOLUTION: The portable multifunctional tank 10 has a rectangular bottom portion 11, elongated side wall portions 12 (a), 13 (b) and short side wall portions 14 (c), 14 (a) and 14 (b) which are connected to the long side and the short side of the rectangular bottom portion 11, 15 (d), and the sheet material 16 is made of either one or both of rubber and flexible synthetic resin, and the long side wall portions 12, 13 are formed on one side or both sides in the longitudinal direction 20 which can be inserted into the long side supporting members 17, 19. The short side wall portions 14, 15 are opened on one side or both sides in the longitudinal direction to form short side supporting members 21 , 23 that can be inserted, and the adjacent end portions of the long side wall portions 12, 13 and the short side wall portions 14, 15 are joined to each other to form a rectangular tubular body having an open top and .(FIG.【課題】組み立て、固定等の付帯作業負担が軽減され、搬送及び保管が容易となるポータブル多機能槽を提供する。【解決手段】ポータブル多機能槽10は、長方形底部11と、長方形底部11の長辺及び短辺に連接する長尺側壁部12(a)、13(b)及び短尺側壁部14(c)、15(d)とを有するシート材16で構成され、シート材16はゴム及び可撓性を有する合成樹脂のいずれか一方又は双方からなり、長尺側壁部12、13は長手方向の片側又は両側に開口して長尺側支持部材17、19の挿入が可能な長尺側収納部18、20を備え、短尺側壁部14、15は長手方向の片側又は両側に開口して短尺側支持部材21、23の挿入が可能な短尺側収納部22、24を備え、長尺側壁部12、13と短尺側壁部14、15の隣り合う端部同士は接合されて、上部開放の四角筒状体となっている。【選択図】図1
