The disclosure provides an apparatus for monitoring the pressure of a bicycle tire, the apparatus including a housing, a pressure sensor, and a communication interface, wherein: the housing is sleeved on an air valve component of the tire, and spirally connected with the air valve component, and a protruding structure is arranged in the housing to extend into the air valve component, and to push away a valve in the air valve component; and a vent hole is arranged on the protruding structure to conduct the air in the tire into the housing; the pressure sensor is arranged in the housing and configured to monitor the pressure of the air in the tire conducted away by the vent hole; and the communication interface is configured to transmit a result of monitoring the pressure to a tire pressure output component for displaying and/or playing.

A bicycle rim includes a rim well which is connected to rim walls. A pressure sensor is connected to the rim well. The pressure sensor is electrically connected to an NFC antenna for contactless transmission of data and contactless reception of energy.