The invention provides a tire, a tire pressure regulating system and a control method for the tire pressure regulating system. The tire comprises a tire body, a rim body, an emergency inner tube, and an air passage disk, wherein the rim body is arranged on an inner ring side of the tire body, and an annular aeration space is formed between the rim body and the tire body; the emergency inner tube is arranged in the aeration space; and the air passage disk is arranged in the middle of the tire body and connected with the rim body, the air passage disk has mutually independent tire air passages and emergency inner tube air passages, the first ends of the tire air passages are communicated with the aeration space, and the first ends of the emergency inner tube air passages are communicated with the emergency inner tube. The tire provided by the invention is provided with the emergency inner tube, so that when air leakage or accidents of the tire body occur, emergency aeration can be carried out through the emergency inner tube. The tire pressure regulating system provided by the invention can carry out air pressure adjustment on the tire during vehicle running or parking, and can monitor the tire pressure condition of the tire in real time, thereby effectively avoiding dangers such as tire suspended load and tip-over, and ensuring the vehicle traveling.