A sidelink monitoring method for vehicle communication, performed by a first vehicle communication terminal, the method comprising: establishing a unicast link with a second vehicle communication terminal; monitoring communication quality of the unicast link, and determining, according to the communication quality of the unicast link, whether the unicast link fails, wherein the monitoring communication quality of the unicast link, and the determining, according to the communication quality of the unicast link, whether the unicast link fails comprises: measuring, through a physical, PHY, layer, signal quality of a reference signal transmitted by the second vehicle communication terminal through the unicast link; and determining, according to the signal quality of the reference signal, whether the unicast link fails; and releasing the unicast link in accordance with a determination that the unicast link fails and does not recover in a first preset time, wherein after determining that the unicast link fails, the method further comprises: continuing to measure the signal quality of the reference signal in a second preset time through the PHY layer, the second preset time having a shorter duration than the first preset time; and determining that the PHY layer of the unicast link recovers in accordance with a determination, according to the signal quality. establishing a unicast link with a second vehicle communication terminal; monitoring communication quality of the unicast link, and determining, according to the communication quality of the unicast link, whether the unicast link fails, wherein the monitoring communication quality of the unicast link, and the determining, according to the communication quality of the unicast link, whether the unicast link fails comprises: measuring, through a physical, PHY, layer, signal quality of a reference signal transmitted by the second vehicle communication terminal through the unicast link; and determining, according to the signal quality of the reference signal, whether the unicast link fails; and releasing the unicast link in accordance with a determination that the unicast link fails and does not recover in a first preset time, wherein after determining that the unicast link fails, the method further comprises: continuing to measure the signal quality of the reference signal in a second preset time through the PHY layer, the second preset time having a shorter duration than the first preset time; and determining that the PHY layer of the unicast link recovers in accordance with a determination, according to the signal quality. measuring, through a physical, PHY, layer, signal quality of a reference signal transmitted by the second vehicle communication terminal through the unicast link; and determining, according to the signal quality of the reference signal, whether the unicast link fails; and releasing the unicast link in accordance with a determination that the unicast link fails and does not recover in a first preset time, wherein after determining that the unicast link fails, the method further comprises: continuing to measure the signal quality of the reference signal in a second preset time through the PHY layer, the second preset time having a shorter duration than the first preset time; and determining that the PHY layer of the unicast link recovers in accordance with a determination, according to the signal quality. continuing to measure the signal quality of the reference signal in a second preset time through the PHY layer, the second preset time having a shorter duration than the first preset time; and determining that the PHY layer of the unicast link recovers in accordance with a determination, according to the signal quality.