A resource mapping method performed by a network side device, comprising: determining resource mapping configuration information about a Physical Downlink Control Channel, PDCCH; and mapping each Virtual Resource Block, VRB, to a corresponding Physical Resource Block, PRB, in accordance with the resource mapping configuration information, and transmitting the resource mapping configuration information to a User Equipment, UE, wherein one or more configuration parameters in the resource mapping configuration information comprise at least one of a quantity N VRB DL of the VRBs available for a downlink bandwidth, a frequency gap of PRBs to which adjacent VRBs map, a transmission bandwidth where the UE is located, and a bandwidth occupied by scheduled data, wherein the resource mapping method is characterized in that the one or more configuration parameters in the resource mapping configuration information further comprise interleaving granularity N unit of a block interleaver, during a Distributed Virtual Resource Block, DVRB, mapping; and the transmitting the resource mapping configuration information to the UE comprises transmitting the resource mapping configuration information to the UE via L1 signaling, wherein the network side device is configured to notify the UE of a plurality of resource mapping configuration modes through a Radio Resource Control, RRC, signaling or a plurality of resource mapping configuration modes are preconfigured, and the network side device is configured to notify the UE of one resource mapping configuration mode from the plurality of resource mapping configuration modes through the L1 signaling dynamically. determining resource mapping configuration information about a Physical Downlink Control Channel, PDCCH; and mapping each Virtual Resource Block, VRB, to a corresponding Physical Resource Block, PRB, in accordance with the resource mapping configuration information, and transmitting the resource mapping configuration information to a User Equipment, UE, wherein one or more configuration parameters in the resource mapping configuration information comprise at least one of a quantity N VRB DL of the VRBs available for a downlink bandwidth, a frequency gap of PRBs to which adjacent VRBs map, a transmission bandwidth where the UE is located, and a bandwidth occupied by scheduled data, wherein the resource mapping method is characterized in that the one or more configuration parameters in the resource mapping configuration information further comprise interleaving granularity N unit of a block interleaver, during a Distributed Virtual Resource Block, DVRB, mapping; and the transmitting the resource mapping configuration information to the UE comprises transmitting the resource mapping configuration information to the UE via L1 signaling, wherein the network side device is configured to notify the UE of a plurality of resource mapping configuration modes through a Radio Resource Control, RRC, signaling or a plurality of resource mapping configuration modes are preconfigured, and the network side device is configured to notify the UE of one resource mapping configuration mode from the plurality of resource mapping configuration modes through the L1 signaling dynamically.