The invention discloses an indoor floor heating water collection and distribution device which comprises a support and water collection and distribution device bodies; water collection and distribution device body mounting holes are formed in the support; the water collection and distribution device bodies are divided into two columns to be installed on the support; each water collection and distribution device body is provided with a water inlet joint, branch water outlet joints and a water return joint; structure reinforcing ribs are arranged in the positions, below the water collection anddistribution device body mounting holes, of the upper side face of the support in an inward protruding mode, and used for reinforcing the strength of the support; and the side edges, bent in a stamping mode, of the support are arranged on the rear portion and at the bottom, mounting holes in the rear side edge are used for installation to the wall, and mounting holes in the bottom side edge are used for installation to the ground. In this way, the indoor floor heating water collection and distribution device is simple in structure; as the water collection and distribution device bodies are wholly made of plastic, the cost is low and assembly and disassembly are convenient; and due to the pipeline direct-insertion type connection mode, no assisting tool is required, convenience and quickness are achieved, and labor is saved.