Folding support and folding bed

A folding support, comprising a supporting crossbar and a folding assembly arranged at each of two ends of the supporting crossbar, wherein the folding assembly comprises a connecting base, an upper supporting rod, and a lower supporting rod, the connecting base is fixedly mounted at an end portion of the supporting crossbar, the upper supporting rod is rotatably connected to the connecting base, the lower supporting rod is rotatably connected to the upper supporting rod, and the upper supporting rod and the lower supporting rod are configured to rotate in an identical plane to implement folding and unfolding of the folding assembly;

• when the folding assembly is folded, the upper supporting rod and the lower supporting rod are folded toward each other, and the upper supporting rod and the lower supporting rod are positioned adjacent to a side of the supporting crossbar;
• and
• when the folding assembly is unfolded, the upper supporting rod and the lower supporting rod are unfolded away from each other, the upper supporting rod and the lower supporting rod abut against the connecting base, and the lower supporting rod is locked and engaged with the connecting base to limit a rotation of the upper supporting rod and the lower supporting rod to allow the folding assembly to be maintained in an unfolded state.