The invention discloses a multi-bill chain type bill separating printer capable of automatically folding retention lists, comprising a stylus printer, an automatic bill separation mechanism, an installation support and a retention list automatic folding mechanism; the automatic bill separation mechanism comprises a pre-separation device, a paper feeding wheel, a separation plate, a client serial guiding paper board, a client serial cutting knife, a retention serial guiding paper board, a retention serial cutting knife, a sensor and a tension spring; the retention list automatic folding mechanism comprises a bottom plate, a left side plate, a right side plate, a front pushing plate, a pull plate, a back pushing plate, a left buckling plate, a right buckling plate, a motor and a pulling rope; multiple bills printed and outputted by the stylus printer is in match connection with the paper feeding wheel of automatic bill separating mechanism; and the paper feeding port of the retention list automatic folding mechanism is arranged below the retention list bill output channel. The multi-bill chain type bill separating printer has advantages of automatically separating the printed multiple bills and automatically folding the printed bill retention lists.