An embodiment of the disclosure provides a resource partition aggregating method and a device, the method includes acquiring a resource utilization ratio of each resource partition in a first signal unit. When there is a resource utilization ratio of each resource partition of at least two adjacent resource partitions in the first signal unit is less than a first preset threshold, whether a zone index used after aggregating the at least two adjacent resource partitions causes a communication interference with zone indexes used by resource partitions in an adjacent second signal unit is determined. If no communication interference is caused, determining area distribution parameters of the aggregated at least two adjacent resource partitions. A broadcast message carrying the area distribution parameters to a vehicle terminal is sent. By using the embodiment of the present disclosure, a resource utilization ratio can be improved.