A tire inflation pressure sensing apparatus includes a pressure sensor, a transmitter, a transceiver, a receiver, and a determining device. The pressure sensor and transceiver are provided on a wheel of a vehicle, while the transmitter, receiver, and determining device are provided on the body of the vehicle. The pressure sensor works to generate a pressure signal representative of the inflation pressure of a tire on the wheel. The transmitter works to send out a predetermined radio wave. The transceiver is configured to receive the predetermined radio wave and send out the pressure signal when a transmission of the pressure signal is required and a level of the received predetermined radio wave has reached a predetermined level. The receiver works to receive the pressure signal from the transceiver. The determining device is configured to determine the inflation pressure of the tire based on the pressure signal received via the receiver.