The invention discloses a method and a device for processing received data. The method comprises the following steps: acquiring completed data packets obtained in response to read requests; selecting an idle buffer segment to serve as a destination buffer segment, wherein buffer segments are obtained in a way of segmenting a corresponding buffer, and correspond to the read requests one by one; and buffering the completed data packets in buffer plates of the destination buffer segment in sequence to be read, wherein the buffer plates are obtained in a way of segmenting the corresponding buffer segments, and correspond to the completed data packets one by one. Through the technical characteristics of the disclosure, the completed data packets corresponding to the read requests are buffered into target data segments after the completed data packets are obtained, and the completed data packets are buffered into the buffer plates corresponding to the data segments one by one, so that the possible situation that the completed data packets arrive at a requester disorderly in the prior art is avoided.