A radio base station for performing radio communication by allocating a different radio resource to each of a plurality of radio terminals has a measurement unit for measuring a path loss on the radio resource, a difference information obtaining unit for obtaining difference information Ph between maximum transmit power and current transmit power, a communication type information obtaining unit for obtaining communication type information indicative of a communication type of each of the radio terminals, and a control unit for classifying the radio resources into at least two radio resource groups based on the path loss on each of the radio resources, and for controlling to allocate a radio resource in a corresponding radio resource group to each of the radio terminals based on the difference information and the communication type information obtained. Thereby, the transmit power of a plurality of radio terminals is suitably controlled and a stable radio link is maintained.