A method for resource mapping, wherein a time-frequency resource for transmitting current data comprises a plurality of frequency bands, and sub-carrier spacings corresponding to the plurality of frequency bands are at least partially different, the method comprising: determining a unit time domain resource for resource mapping, a length of the unit time domain resource being equal to a symbol length corresponding to a minimum subcarrier spacing of the plurality of frequency bands; and performing resource mapping on the data in a plurality of unit time domain resources for transmitting the data according to a chronological order, wherein the resource mapping performed in each of the plurality of unit time domain resources is performed based on a preset mapping rule, wherein the mapping rule comprises: performing the resource mapping in at least one symbol sequentially according to an end time of the at least one symbol in the plurality of frequency band, and characterized in that the mapping rule further comprises: if the plurality of frequency bands comprise at least two symbols having the same end time, performing the resource mapping in the at least two symbols sequentially based on a preset subcarrier spacing order according to subcarrier spacings of frequency bands to which the at least two symbols belong respectively, wherein the at least two symbols belong to different frequency bands, or, the mapping rule further comprises: if the plurality of frequency bands comprise at least two symbols having the same end time, performing the resource mapping in the at least two symbols based on a second frequency order according to frequencies corresponding to the frequency bands to which the at least two symbols belong respectively, wherein the at least two symbols belong to different frequency bands. determining a unit time domain resource for resource mapping, a length of the unit time domain resource being equal to a symbol length corresponding to a minimum subcarrier spacing of the plurality of frequency bands; and performing resource mapping on the data in a plurality of unit time domain resources for transmitting the data according to a chronological order, wherein the resource mapping performed in each of the plurality of unit time domain resources is performed based on a preset mapping rule, wherein the mapping rule comprises: performing the resource mapping in at least one symbol sequentially according to an end time of the at least one symbol in the plurality of frequency band, and characterized in that the mapping rule further comprises: if the plurality of frequency bands comprise at least two symbols having the same end time, performing the resource mapping in the at least two symbols sequentially based on a preset subcarrier spacing order according to subcarrier spacings of frequency bands to which the at least two symbols belong respectively, wherein the at least two symbols belong to different frequency bands, or, the mapping rule further comprises: if the plurality of frequency bands comprise at least two symbols having the same end time, performing the resource mapping in the at least two symbols based on a second frequency order according to frequencies corresponding to the frequency bands to which the at least two symbols belong respectively, wherein the at least two symbols belong to different frequency bands. performing the resource mapping in at least one symbol sequentially according to an end time of the at least one symbol in the plurality of frequency band, and characterized in that the mapping rule further comprises: if the plurality of frequency bands comprise at least two symbols having the same end time, performing the resource mapping in the at least two symbols sequentially based on a preset subcarrier spacing order according to subcarrier spacings of frequency bands to which the at least two symbols belong respectively, wherein the at least two symbols belong to different frequency bands, or, the mapping rule further comprises: if the plurality of frequency bands comprise at least two symbols having the same end time, performing the resource mapping in the at least two symbols based on a second frequency order according to frequencies corresponding to the frequency bands to which the at least two symbols belong respectively, wherein the at least two symbols belong to different frequency bands. if the plurality of frequency bands comprise at least two symbols having the same end time, performing the resource mapping in the at least two symbols sequentially based on a preset subcarrier spacing order according to subcarrier spacings of frequency bands to which the at least two symbols belong respectively, wherein the at least two symbols belong to different frequency bands, or, the mapping rule further comprises: if the plurality of frequency bands comprise at least two symbols having the same end time, performing the resource mapping in the at least two symbols based on a second frequency order according to frequencies corresponding to the frequency bands to which the at least two symbols belong respectively, wherein the at least two symbols belong to different frequency bands.