Embodiments of the disclosure provide a method and apparatus for reconfiguring DL-UL resource allocation in a TDD system. The method includes steps of: a) obtaining traffic condition about DL and UL data to be transmitted; b) estimating system-wise transmission capability and/or UE-wise transmission capability, wherein the system-wise transmission capability accounts for DL transmission capability and UL transmission capability of the TDD system, and the UE-wise transmission capability accounts for transmission capabilities of different UEs; and c) reconfiguring the DL-UL resource allocation according to the obtained traffic condition and the estimated system-wise transmission capability and/or UE-wise transmission capability.