A retractable moving stand, comprising: a plurality of tiers of floor bases; a leg portion supporting each of the floor bases such that the floor base is movable in a horizontal state; and a plurality of chairs attached to each floor base, in which each floor base includes: a beam member horizontally extending in a right-left direction of the chairs; a plurality of arm members which are located at a plurality of portions of the beam member arranged at intervals in a longitudinal direction and horizontally protrude from the beam member toward the front of the chairs; and a floor member laid over the plurality of arm members, the leg portion includes: a plurality of columns which are connected at upper ends thereof respectively to a plurality of portions of the beam member arranged at intervals in the longitudinal direction and extend downward from the beam member; a plurality of foot members which are connected around rear ends thereof respectively to lower ends of the columns and extend in parallel to the arm members; and a plurality of moving rollers provided at front and rear ends of each foot member, a rear end of each of the plurality of arm members is connected to at least one of the beam member and the columns, a length of the plurality of columns of each floor base is different from that of the next floor base by a difference in height between the floor bases and the intervals of the portions of the beam member of each floor base which are connected to the upper ends of the plurality of columns are somewhat different from those of the other floor bases, and the plurality of tiers of floor bases are thereby capable of moving in the horizontal state between an advance position where the floor bases are shifted stepwise from each other and a retracting position where the floor bases are aligned with each other in a vertical direction, and the floor members of the plurality of tiers of floor bases at the advance position form a step-like passage, characterised in that each floor base includes seat arm members and passage arm members as the arm members, and includes a seat floor member and a passage floor member independent of each other as the floor member, the seat floor member is supported on at least one of the beam member and the columns by the seat arm members, and the passage floor member is supported on at least one of the beam member and the columns by the passage arm members. a plurality of tiers of floor bases; a leg portion supporting each of the floor bases such that the floor base is movable in a horizontal state; and a plurality of chairs attached to each floor base, in which each floor base includes: a beam member horizontally extending in a right-left direction of the chairs; a plurality of arm members which are located at a plurality of portions of the beam member arranged at intervals in a longitudinal direction and horizontally protrude from the beam member toward the front of the chairs; and a floor member laid over the plurality of arm members, the leg portion includes: a plurality of columns which are connected at upper ends thereof respectively to a plurality of portions of the beam member arranged at intervals in the longitudinal direction and extend downward from the beam member; a plurality of foot members which are connected around rear ends thereof respectively to lower ends of the columns and extend in parallel to the arm members; and a plurality of moving rollers provided at front and rear ends of each foot member, a rear end of each of the plurality of arm members is connected to at least one of the beam member and the columns, a length of the plurality of columns of each floor base is different from that of the next floor base by a difference in height between the floor bases and the intervals of the portions of the beam member of each floor base which are connected to the upper ends of the plurality of columns are somewhat different from those of the other floor bases, and the plurality of tiers of floor bases are thereby capable of moving in the horizontal state between an advance position where the floor bases are shifted stepwise from each other and a retracting position where the floor bases are aligned with each other in a vertical direction, and the floor members of the plurality of tiers of floor bases at the advance position form a step-like passage, characterised in that each floor base includes seat arm members and passage arm members as the arm members, and includes a seat floor member and a passage floor member independent of each other as the floor member, the seat floor member is supported on at least one of the beam member and the columns by the seat arm members, and the passage floor member is supported on at least one of the beam member and the columns by the passage arm members.