A foldable rollator includes: a main support frame including two spaced-apart front support rods a rear support frame including two spaced-apart rear support rods pivotally coupled to the front support rods, respectively a plurality of wheels respectively installed on the main support frame and the rear support rods for rolling on the ground an intermediate support frame coupled to the main support frame and the rear support frame, including a front support sub-frame pivotally coupled between the front support rods and a rear support sub-frame pivotally coupled between the rear support rods, the front and rear support sub-frames being further pivotally coupled to an axle a seat unit disposed atop the intermediate support frame and a backrest unit pivotally coupled to the axle.一種簡易收折的助行車,包含主架體、與主架體樞接的後輪架體、分別安裝於該主架體及後輪架體下端的輪子、安裝於該主支架與後輪支架樞裝處下方的中央架體、安裝於中央架體上的座墊,及靠背單元。中央架體包括一樞接於主架體的二主支架之間的第一骨架及一樞接於該後輪架體的二後輪支架之間的第二骨架,該第一骨架、第二骨架與靠背單元沿一橫向樞軸共同樞接。不使用時,對該靠背單元上拉,該第一骨架與第二骨架因該橫向樞軸朝上位移而相對樞轉,進而帶動該主支架與後輪支架相互靠近而達收折狀態。
