A conveyor chain for movable sidewalk can easily ensure the sliding amount of a driven device thereby preventing the unnecessary garbage even can not update the conveyor chain with performance that does not reach the service lifetime to new product. The conveyor chain (A) for movable sidewalk according to the invention is an annular member with a preset length. The chain with preset number of connected chain links is used as one unit. While a plurality of units are connected, a required number of fractional chain links are connected for forming the annular member. Each chain link is respectively provided with one node of accompany jig. The invention is characterized in that: more than one unit in the plurality of units are length adjusting units; each length adjusting unit is composed of a chain (20a) which can be detached for two chain links each time; and each chain link end of the chain after detachment of the chain link can be connected with one another; and when two chain links are detached from the length adjusting unit, the total length of the annular conveyor chain can be shortened for a length of one chain link.