A quasi co-location configuration method, performed by a terminal side, comprising: when an aperiodic reference signal quasi-co-located with a physical channel or a physical signal is configured by a network device, determining whether the aperiodic reference signal or a target physical signal associated with the aperiodic reference signal is a quasi co-location signal of the physical channel or the physical signal; characterized in that, the determining that the aperiodic reference signal or the target physical signal associated with the aperiodic reference signal is the quasi co-location signal of the physical channel or the physical signal comprises: in a case that the aperiodic reference signal is not received within a first time window, determining that the target physical signal associated with the aperiodic reference signal is the quasi co-location signal of the physical channel or the physical signal; or, in a case that the aperiodic reference signal and the target physical signal associated with the aperiodic reference signal are received within the first time window, determining that the one signal, that is closest in a time domain to the physical channel or the physical signal, between the aperiodic reference signal and the target physical signal is the quasi co-location signal of the physical channel or the physical signal; wherein the length of the first time window is equal to a period length of the target physical signal associated with the aperiodic reference signal and the length of the first time window is indicated to the terminal by a first high-layer signaling transmitted by the network device. when an aperiodic reference signal quasi-co-located with a physical channel or a physical signal is configured by a network device, determining whether the aperiodic reference signal or a target physical signal associated with the aperiodic reference signal is a quasi co-location signal of the physical channel or the physical signal; characterized in that, the determining that the aperiodic reference signal or the target physical signal associated with the aperiodic reference signal is the quasi co-location signal of the physical channel or the physical signal comprises: in a case that the aperiodic reference signal is not received within a first time window, determining that the target physical signal associated with the aperiodic reference signal is the quasi co-location signal of the physical channel or the physical signal; or, in a case that the aperiodic reference signal and the target physical signal associated with the aperiodic reference signal are received within the first time window, determining that the one signal, that is closest in a time domain to the physical channel or the physical signal, between the aperiodic reference signal and the target physical signal is the quasi co-location signal of the physical channel or the physical signal; wherein the length of the first time window is equal to a period length of the target physical signal associated with the aperiodic reference signal and the length of the first time window is indicated to the terminal by a first high-layer signaling transmitted by the network device. in a case that the aperiodic reference signal is not received within a first time window, determining that the target physical signal associated with the aperiodic reference signal is the quasi co-location signal of the physical channel or the physical signal; or, in a case that the aperiodic reference signal and the target physical signal associated with the aperiodic reference signal are received within the first time window, determining that the one signal, that is closest in a time domain to the physical channel or the physical signal, between the aperiodic reference signal and the target physical signal is the quasi co-location signal of the physical channel or the physical signal; wherein the length of the first time window is equal to a period length of the target physical signal associated with the aperiodic reference signal and the length of the first time window is indicated to the terminal by a first high-layer signaling transmitted by the network device.