Frequency domain resource division method and device

The invention relates to a frequency domain resource division method and device, and relates to the technical field of communication. The method comprises the following steps: determining a first preset working frequency band corresponding to a first network; determining a second preset working frequency band corresponding to the second network; and dividing the first frequency domain resource and the second frequency domain resource based on the frequency domain difference between the first preset working frequency band and the second preset working frequency band. According to the invention, preset working frequency bands corresponding to a first network and a second network respectively are determined; and on the basis of determining the difference between the first network and the second network in the working frequency domain, the different resources are allocated for downlink data transmission of the first network and data transmission of the second network. According to different conditions of the two