A channel transmission method, a terminal and a network device are disclosed. The method includes: acquiring target transmission configuration indicator (TCI) state information of a control resource set with an identity value of 0 (CORESET0); receiving a physical downlink channel according to the target TCI state information when a preset condition is met; wherein the physical downlink channel includes at least one of: a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH).