An enhanced physical downlink control channel E-PDCCH transmission method, comprising: in a physical resource block set, separately arranging first resource groups in each physical resource block pair PRB pair, wherein each first resource group is numbered, the first resource groups are resource element groups eREGs or REGs, and the physical resource block set comprises at least one of the physical resource block pairs; wherein each of the physical resource block pairs comprises N third resource groups, wherein N is a positive integer, and each of the third resource groups comprises M first resource groups, M is an integer greater or equal to 2, and in the physical resource block set, a numbering set of first resource groups comprised in each third resource group in a physical resource block pair is the same as a numbering set of first resource groups comprised in a third resource group in each of other physical resource block pairs; numbering second resource groups according to a correspondence between the first resource groups and the second resource groups in the physical resource block set, wherein the second resource groups are control channel element eCCE or control channel candidates, and each of the second resource groups comprises M first resource groups; determining numbers of the second resource groups for transmitting an E-PDCCH; and mapping, according to the determined numbers, the E-PDCCH to the corresponding first resource groups for transmission; wherein: the numbering second resource groups according to a correspondence between the first resource groups and the second resource groups in the physical resource block set comprises that: each of the third resource groups corresponds to one of second resource groups of a first type, wherein each of the second resource groups of the first type is a second resource group for transmitting the E-PDCCH in localized mode; and the second resource groups of the first type in each physical resource block pair are numbered sequentially in ascending or descending order of numbers of the physical resource block pairs, wherein a correspondence between numbers of the second resource groups of the first type and numbers of first resource groups corresponding to the second resource groups of the first type exists in each physical resource block pair. in a physical resource block set, separately arranging first resource groups in each physical resource block pair PRB pair, wherein each first resource group is numbered, the first resource groups are resource element groups eREGs or REGs, and the physical resource block set comprises at least one of the physical resource block pairs; wherein each of the physical resource block pairs comprises N third resource groups, wherein N is a positive integer, and each of the third resource groups comprises M first resource groups, M is an integer greater or equal to 2, and in the physical resource block set, a numbering set of first resource groups comprised in each third resource group in a physical resource block pair is the same as a numbering set of first resource groups comprised in a third resource group in each of other physical resource block pairs; numbering second resource groups according to a correspondence between the first resource groups and the second resource groups in the physical resource block set, wherein the second resource groups are control channel element eCCE or control channel candidates, and each of the second resource groups comprises M first resource groups; determining numbers of the second resource groups for transmitting an E-PDCCH; and mapping, according to the determined numbers, the E-PDCCH to the corresponding first resource groups for transmission; wherein: the numbering second resource groups according to a correspondence between the first resource groups and the second resource groups in the physical resource block set comprises that: each of the third resource groups corresponds to one of second resource groups of a first type, wherein each of the second resource groups of the first type is a second resource group for transmitting the E-PDCCH in localized mode; and the second resource groups of the first type in each physical resource block pair are numbered sequentially in ascending or descending order of numbers of the physical resource block pairs, wherein a correspondence between numbers of the second resource groups of the first type and numbers of first resource groups corresponding to the second resource groups of the first type exists in each physical resource block pair.