The invention discloses a data processing method and device. The method comprises the following steps: detecting a target transmission rate, wherein the target transmission rate is a data transmission rate between a client and a server; adjusting the magnitude of a target data recovery rate according to the detected target transmission rate, wherein the target data recovery rate is a rate for recovering corrupted data in the server; and recovering the corrupted data according to the adjusted target data rate. Through adoption of the data processing method and device, the technical problem of relatively slow data recovery since the target data recovery rate is a constant rate in the prior art is solved.