Account data processing method, device and system

Embodiments of the invention disclose an account data processing method, a device and a system. The method comprises the steps of obtaining a resource transfer data set of a to-be-identified account provided by a resource management system; extracting a specified resource transfer data pair from the resource transfer data set, wherein the specified resource transfer data pair comprises resource transfer-in data and first resource transfer-out data after the corresponding resource transfer-in data occurs; wherein the resource transfer time difference between the resource transfer-in data and the corresponding first resource transfer-out data in the specified resource transfer data pair is smaller than a specified time threshold value, and the difference between the resource transfer amountsis smaller than a preset transfer amount threshold value; performing feature extraction on the resource transfer data pair of the to-be-identified account in a first specified time window to obtain first feature data; identi