To provide a fire extinguisher mounting base having improved transportability, maintainability, and installability which does not catch feet and in which the smartness is obtained at the time of installation.

The fire extinguisher mounting base is constituted of a receiving base 1 comprising a mold of resin having shape features of a mortar-like circular receiving mounting face 1a recessedly formed at the center of planar polygonal shape and both the sleeve planar face 1b having a round mountain shape viewing from a side direction in both the left and right sides of the circular receiving mounting face 1a and further having a hole for standing a pole behind the above planar polygonal shape, the pole 3 of a resin insertably and removably standing in the above hole for standing the pole of the receiving base 1, and a displaying board 4 of a resin insertably and removably secured to the pole 3 of a resin.