An information transmission method for a network side device in communication with a user equipment, comprising: mapping a Physical Broadcast Channel, PBCH, reference signal to a symbol of a Synchronization Signal, SS, block through which a PBCH is to be transmitted, target information being transmitted through a sequence of the PBCH reference signal; and transmitting the PBCH reference signal and parity information through the SS block to the user equipment, the parity information being configured to check the target information, and the parity information being carried by the PBCH, characterized in that first concatenate information is encoded to acquire the parity information; wherein combination information and first parity information corresponding to the combination information are concatenated to acquire the first concatenate information; wherein partial minimum system information and the target information are combined to acquire the combination information; or second concatenate information is encoded to acquire the parity information; wherein partial minimum system information and first parity information corresponding to combination information are concatenated to acquire the second concatenate information; wherein the partial minimum system information and the target information are combined to acquire the combination information; or third concatenate information is encoded to acquire the parity information; wherein partial minimum system information and second parity information corresponding to the partial minimum system information are concatenated to acquire the third concatenate information; wherein third parity information corresponding to the partial minimum system information is scrambled by using a scrambling sequence corresponding to the target information, to acquire the second parity information. mapping a Physical Broadcast Channel, PBCH, reference signal to a symbol of a Synchronization Signal, SS, block through which a PBCH is to be transmitted, target information being transmitted through a sequence of the PBCH reference signal; and transmitting the PBCH reference signal and parity information through the SS block to the user equipment, the parity information being configured to check the target information, and the parity information being carried by the PBCH, characterized in that first concatenate information is encoded to acquire the parity information; wherein combination information and first parity information corresponding to the combination information are concatenated to acquire the first concatenate information; wherein partial minimum system information and the target information are combined to acquire the combination information; or second concatenate information is encoded to acquire the parity information; wherein partial minimum system information and first parity information corresponding to combination information are concatenated to acquire the second concatenate information; wherein the partial minimum system information and the target information are combined to acquire the combination information; or third concatenate information is encoded to acquire the parity information; wherein partial minimum system information and second parity information corresponding to the partial minimum system information are concatenated to acquire the third concatenate information; wherein third parity information corresponding to the partial minimum system information is scrambled by using a scrambling sequence corresponding to the target information, to acquire the second parity information.