The invention discloses a rigid push rod chain. The rigid push rod chain consists of multiple chain links; each chain link includes a set of left chain plates and a set of right chain plates; the left chain plates and the right chain plates oppositely form interlocking buckles; the lower surfaces of the interlocking buckles form arc surfaces towards separated ends; the arc surfaces are gradually opened in places of longer than the arc lengths by 1/2 to form involutes and opening; the upper parts of the left chain plates and the right chain plates form support planes through the interlocking buckles; fulcrums are formed in the openings of the lower parts of the left chain plates; the fulcrums are transited to the externals of the left chain plates to form arcs 1; opening/closing arc surfaces 1 are formed on the outer side surfaces of the left chain plates; the lower surfaces of the right chain plates are pad foot planes; the pad foot planes are outwards transited as arcs 2; and opening/closing arc surfaces 2 are formed on the outer side surfaces of the right chain plates. The lower surfaces of the interlocking buckles form the arc surfaces towards the separated ends, so that the precision can be matched, and the opening and the closing are convenient; and meanwhile, the support strength of a chain push rod is facilitated due to surface contact of the arc surfaces.