The invention discloses a self-aerating and pressure-regulating device for a rubber tire road roller, which belongs to the field of aerating and pressure-regulating devices of rubber tire road rollers. The device comprises a front wheel assembly, a frame, a cab assembly, a power system, a back wheel assembly and an air channel system, wherein the air channel system comprises an air compressor, a pressure valve bank, an aerating valve bank, rotating valves, air tank assembly, pressure gauges, rubber tires, an electromagnetic reversing valve and a deflating valve bank; the air tank assembly is connected with one end of the pressure valve bank, one end of the aerating valve bank and one pressure gauge respectively; the other end of the pressure valve bank is connected with the air compressor; the other end of the aerating valve bank is connected with another pressure gauge, one end of each of a plurality of rotating valves and the deflating valve bank respectively; and the other end of each rotating valve is connected with the rubber tires through the electromagnetic reversing valve. The self-aerating and pressure-regulating device has the advantages that: the aerating way of the conventional rubber tire road roller is greatly improved, an automatic pressure-regulating device is arranged, the complex and dangerous situations caused by an original operation method are avoided, and the reliability and operating convenience are improved.