A method for a base station selecting a terminal during congestion processing, comprising: obtaining a minimal reserved bandwidth (102, 106) and bandwidth utilization ratio of each terminal which has accessed a network, and setting a threshold; wherein, the bandwidth utilization ratio of each terminal is a utilization efficiency of bandwidth of the terminal; when the congestion occurs, the base station determining an initial priority of congestion processing of the terminal, obtaining a secondary priority of congestion processing of the terminal according to a size relationship between a difference percentage of the minimal reserved bandwidths of every two adjacent terminals and the set threshold, and the bandwidth utilization ratio; and selecting one or more terminals to process the congestion according to a sequence of the obtained secondary priorities; wherein said base station determining the initial priority of congestion processing comprises: sequencing the terminals which have accessed the network according to the minimal reserved bandwidths from large to small, taking the sequence as the initial priorities of congestion processing of the terminals which have accessed the network, and recording said initial priorities into a terminal list; the larger the minimal reserved bandwidth of the terminal is, the higher the initial priority of congestion processing of the terminal is; said congestion processing comprises: disconnecting a network connection of the selected terminal or handing over the selected terminal to an adjacent cell base station; wherein a congestion processing way for handing over the selected terminal to the adjacent cell base station comprises: triggering the selected terminal to scan a signal of the adjacent cell base station, and when the signal of the adjacent cell base station is scanned and obtained, handing over said selected terminal to said adjacent cell base station. obtaining a minimal reserved bandwidth (102, 106) and bandwidth utilization ratio of each terminal which has accessed a network, and setting a threshold; wherein, the bandwidth utilization ratio of each terminal is a utilization efficiency of bandwidth of the terminal; when the congestion occurs, the base station determining an initial priority of congestion processing of the terminal, obtaining a secondary priority of congestion processing of the terminal according to a size relationship between a difference percentage of the minimal reserved bandwidths of every two adjacent terminals and the set threshold, and the bandwidth utilization ratio; and selecting one or more terminals to process the congestion according to a sequence of the obtained secondary priorities; wherein said base station determining the initial priority of congestion processing comprises: sequencing the terminals which have accessed the network according to the minimal reserved bandwidths from large to small, taking the sequence as the initial priorities of congestion processing of the terminals which have accessed the network, and recording said initial priorities into a terminal list; the larger the minimal reserved bandwidth of the terminal is, the higher the initial priority of congestion processing of the terminal is; said congestion processing comprises: disconnecting a network connection of the selected terminal or handing over the selected terminal to an adjacent cell base station; wherein a congestion processing way for handing over the selected terminal to the adjacent cell base station comprises: triggering the selected terminal to scan a signal of the adjacent cell base station, and when the signal of the adjacent cell base station is scanned and obtained, handing over said selected terminal to said adjacent cell base station. sequencing the terminals which have accessed the network according to the minimal reserved bandwidths from large to small, taking the sequence as the initial priorities of congestion processing of the terminals which have accessed the network, and recording said initial priorities into a terminal list; the larger the minimal reserved bandwidth of the terminal is, the higher the initial priority of congestion processing of the terminal is; said congestion processing comprises: disconnecting a network connection of the selected terminal or handing over the selected terminal to an adjacent cell base station; wherein a congestion processing way for handing over the selected terminal to the adjacent cell base station comprises: triggering the selected terminal to scan a signal of the adjacent cell base station, and when the signal of the adjacent cell base station is scanned and obtained, handing over said selected terminal to said adjacent cell base station. disconnecting a network connection of the selected terminal or handing over the selected terminal to an adjacent cell base station; wherein a congestion processing way for handing over the selected terminal to the adjacent cell base station comprises: triggering the selected terminal to scan a signal of the adjacent cell base station, and when the signal of the adjacent cell base station is scanned and obtained, handing over said selected terminal to said adjacent cell base station.