Abstract: MF-TDMA has been widely applied to the up-link of broadband communication satellites, and the timeslot allocation strategy is the key to guarantee the efficient utilization of the system resources. In this paper, the timeslot allocation technology with dynamic channel selection is proposed to confront the difficulty of complex allocation process and the low utilization rate. This allocation issue can be divided into two steps: channel select and in-channel slot allocation. To achieve the channel selection, RCP-A algorithm is proposed to provide better support to multi-users with multi-service and higher resource utilization ratio. To address the in-channel slot management, an inverse-numbering slots tree is selected as the management model to solve the problem of delay jitter brought by the slot allocation. Finally, a detailed management realization on satellite is given at last part, and the simulation shows that the allocation algorithm is of high efficiency in the management of timeslot resources and this method can be utilized in RRM (Radio Resource Management) on satellite.