The invention relates to the technical field of ATM equipment, and provides a cash recycling system. The cash recycling system comprises a cash saving device, a cash taking device, a channel assembly, a cash detector, a cash box assembly and a control system, wherein the cash box assembly communicates to the channel assembly; the channel assembly comprises a first channel and a second channel; the cash saving device communicates to the first channel; and the cash taking device communicates to the second channel. The cash recycling system provided by the invention is provided with the cash saving device special for saving cashes and the cash taking device special for taking the cashes; in a cash saving process, the cashes pass through the first channel and are subjected to real and counterfeit detection one by one through the cash detector at the cash saving device; if the cashes are real, the cashes are directly conveyed into the cash box assembly; and if the cashes are defective cashes, the cashes are directly conveyed to the cash taking device. Therefore, saving of the real cashes and withdrawing of the defective cashes can be executed separately, the cash saving process is more continuous, the cash saving efficiency is greatly improved, and the waiting time is shortened.