A method and a device for allocating a radio configuration (RC) type are disclosed in the present invention. The method includes: predefining a first threshold value and a second threshold value; when a user initiate a call, calculating current utilization rate of power resource of a cell and comparing the current utilization rate of power resource with the first threshold value, and calculating current utilization rate of Walsh resource of the cell and comparing the current utilization rate of Walsh resource with the second threshold value; allocating an RC type to TCH (Traffic Channel) and SCH (Supplemental Channel) of forward channels of the call based on above comparison results. In the present invention, an RC type can be dynamically allocated based on the current resource limits of the system, thus improving the capacity of the system.