A method for processing baseband uplink and downlink sub-frames, the method comprising: serially processing uplink sub-frames and downlink sub-frames at a base station side of a Long Term Evolution-Time Division Duplex (LTE-TDD) system, wherein a length of time slots for processing each sub-frame meets formulae { 3 x + 2 y + T L 2 ≤ 5.0 ms 2 x + y ≤ 4 − 2 T a − T d wherein T a is a delay in transmission from a designated receiving antenna to a baseband processor, T d is a delay in initiating baseband sub-frame processing, T L2 is a time reserved for MAC layer processing, x represents an allowable length of time slots for processing an uplink sub-frame, and y represents an allowable length of time slots for processing a downlink sub-frame, wherein an order of processing arrangement in the serially processing uplink sub-frames and downlink sub-frames is: a sub-frame 2 of a current frame, a sub-frame 3 of the current frame, a sub-frame 6 of the current frame, a sub-frame 4 of the current frame, a sub-frame 0 of a next frame, a sub-frame 7 of the current frame, a sub-frame 8 of the current frame, a sub-frame 1 of the next frame, a sub-frame 9 of the current frame, and a sub-frame 5 of the next frame, wherein a reserved time slot with a length of at least T L2 is inserted between the sub-frame 4 of the current frame and the sub-frame 0 of the next frame, and the reserved time slot with a length of at least T L2 is inserted between the sub-frame 9 of the current frame and a downlink sub-frame 5 of the next frame, wherein the sub-frame 2, the sub-frame 3, the sub-frame 4, the sub-frame 7, the sub-frame 8, and the sub-frame 9 are the uplink sub-frames; the sub-frame 0, the sub-frame 1, the sub-frame 5, and the sub-frame 6 are the downlink sub-frames; and the sub-frame 1 and the sub-frame 6 are special sub-frames. serially processing uplink sub-frames and downlink sub-frames at a base station side of a Long Term Evolution-Time Division Duplex (LTE-TDD) system, wherein a length of time slots for processing each sub-frame meets formulae { 3 x + 2 y + T L 2 ≤ 5.0 ms 2 x + y ≤ 4 − 2 T a − T d wherein T a is a delay in transmission from a designated receiving antenna to a baseband processor, T d is a delay in initiating baseband sub-frame processing, T L2 is a time reserved for MAC layer processing, x represents an allowable length of time slots for processing an uplink sub-frame, and y represents an allowable length of time slots for processing a downlink sub-frame, wherein an order of processing arrangement in the serially processing uplink sub-frames and downlink sub-frames is: a sub-frame 2 of a current frame, a sub-frame 3 of the current frame, a sub-frame 6 of the current frame, a sub-frame 4 of the current frame, a sub-frame 0 of a next frame, a sub-frame 7 of the current frame, a sub-frame 8 of the current frame, a sub-frame 1 of the next frame, a sub-frame 9 of the current frame, and a sub-frame 5 of the next frame, wherein a reserved time slot with a length of at least T L2 is inserted between the sub-frame 4 of the current frame and the sub-frame 0 of the next frame, and the reserved time slot with a length of at least T L2 is inserted between the sub-frame 9 of the current frame and a downlink sub-frame 5 of the next frame, wherein the sub-frame 2, the sub-frame 3, the sub-frame 4, the sub-frame 7, the sub-frame 8, and the sub-frame 9 are the uplink sub-frames; the sub-frame 0, the sub-frame 1, the sub-frame 5, and the sub-frame 6 are the downlink sub-frames; and the sub-frame 1 and the sub-frame 6 are special sub-frames.