The utility model provides a foamed filling rack for a foaming worktable of a solar water heater tank, belonging to the technical field of machinery. The technical problems that a thermal insulation layer is non-uniform in thickness, the thermal insulation effect is reduced and the like after foaming in the conventional foaming worktable are solved. According to the foamed filling rack for the foaming worktable of the solar water heater tank, the foamed filling rack comprises multiple supporting rods which are peripherally and uniformly arranged, and connecting rings positioned at the upper and lower ends of the multiple supporting rods, wherein the inner and outer sides of the supporting rods are rotationally connected with rotating wheels; the rotating wheel positioned on the inner side presses against the outer peripheral surface of a water tank liner; the rotating wheel positioned on the outer side presses against the inner side surface of a water tank shell; multiple nozzles are uniformly and fixedly arranged on the connecting rings positioned at the lower ends of the supporting rods; and the nozzles are connected with a spray gun by virtue of a pipeline. The foamed filling rack disclosed by the utility model has the advantage that the foaming effect of the water tank is good.