The invention belongs to the technical field of tires, and particularly relates to a solid tire and a production method thereof. The solid tire comprises a controller, a temperature control switch, awater tank, a lantern ring, a water outlet hole, a conical opening, a cooling unit, a spring piece and a one-way water inlet unit, wherein the water tank is fixed on an automobile rear axle; the lantern ring is fixed on a transmission shaft and positioned below the water tank; the water outlet hole is positioned in the solid tire; by arranging the water tank and the water outlet hole, when an automobile runs in an environment with a large temperature difference, the phenomenon of abrasion caused by temperature rise of the tire is avoided, and water in the water tank is prevented from being wasted when the temperature is not required to be reduced; meanwhile, due to the arrangement of the conical opening, water inside an ellipsoid cavity is prevented from flowing back into a hollow pipeline, so that the unidirectional flow of water flow is ensured, and the water quantity inside the ellipsoid cavity is also kept; and through setting up the lantern ring, on one hand, intermittent water inlet is realized, and on the other hand, a piston rod pressurizes the inside of the water tank, the water inlet speed becomes fast, thereby improving the fluidity and the heat dissipation efficiency ofthe water flow.