A baseband pool device includes a control unit, and a plurality of baseband processing units which are connected one another. The control unit is configured to determine one or more baseband processing units participating in data processing according to a size of data received by the baseband pool device and baseband data processing capabilities of various baseband processing unit, and allocate an identifier of the baseband data to be processed to each baseband processing unit participating in the data processing to construct a data allocation relationship, and respectively transmit the data allocation relationship to the baseband processing units participating in the data processing. The baseband processing units receive the data allocation relationship; and, process the received data according to the data allocation relationship, or transmit the received data to other baseband processing units of the baseband pool device, or receive data processed and then forwarded by other baseband processing units. A method for implementing baseband data distributed switch is also provided. The present invention increases the baseband processing capacity and reduces the cost.