Air inflation sealing device of rail train door and control method thereof

The invention discloses an air inflation sealing device of a rail train door and a control method thereof. The air inflation sealing device comprises an air inflation and exhaust control relay K1, a first time-delay relay J1, a second time-delay relay J2, a train door closing in-place switch S1, a pressure detection switch S2, an air inflation electromagnetic valve Y1, an air exhaust electromagnetic valve Y2, a pressure indicator light H2 and an air inflation sealing rubber strip. The air inflation sealing device which is built by the relay, the time-delay relays and the quick air inflation sealing rubber strip eliminates the influence of software, is high in reliability, low in cost, small in size and small in requirement for the mounting space of a train, provides good late reformation, guarantees the air-tight seal property of the rail train, improves the comfort level of passengers and has a good application prospect.