Embodiments of the present disclosure provide an information reporting method, a terminal and a network device for defining reporting rules of CSI report for the terminal which is in the DRX mode and in the inactive time. The method includes: when the terminal is in a discontinuous reception (DRX) mode, determining, according to first information, whether the terminal in an inactive time reports a channel state information (CSI) report. The first information is configured to indicate allowing the terminal in the inactive time to report the CSI report at a CSI report instant, or prohibiting the terminal in the inactive time from reporting a semi-persistent or aperiodic CSI report reported on a physical uplink shared channel (PUSCH) at the CSI report instant.